210220001221122 has 12 divisors (see below), whose sum is σ = 455476669312470. Its totient is φ = 70073333740368.

The previous prime is 210220001221049. The next prime is 210220001221129. The reversal of 210220001221122 is 221122100022012.

It is a happy number.

210220001221122 is a `hidden beast` number, since 210 + 220 + 0 + 0 + 1 + 2 + 211 + 22 = 666.

It can be written as a sum of positive squares in only one way, i.e., 198839357283681 + 11380643937441 = 14101041^2 + 3373521^2 .

It is a super-2 number, since 2×210220001221122² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11678888956729 = 210220001221122 / (2 + 1 + 0 + 2 + 2 + 0 + 0 + 0 + 1 + 2 + 2 + 1 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 210220001221095 and 210220001221104.

It is not an unprimeable number, because it can be changed into a prime (210220001221129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5839444478347 + ... + 5839444478382.

Almost surely, 2^{210220001221122} is an apocalyptic number.

210220001221122 is an abundant number, since it is smaller than the sum of its proper divisors (245256668091348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210220001221122 is a wasteful number, since it uses less digits than its factorization.

210220001221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11678888956737 (or 11678888956734 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 210220001221122 its reverse (221122100022012), we get a palindrome (431342101243134).

The spelling of 210220001221122 in words is "two hundred ten trillion, two hundred twenty billion, one million, two hundred twenty-one thousand, one hundred twenty-two".