1210011122021 has 8 divisors (see below), whose sum is σ = 1348023001080. Its totient is φ = 1078418400192.

The previous prime is 1210011122017. The next prime is 1210011122041. The reversal of 1210011122021 is 1202211100121.

It can be written as a sum of positive squares in 4 ways, for example, as 9003352996 + 1201007769025 = 94886^2 + 1095905^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1210011122021 - 2² = 1210011122017 is a prime.

It is a super-2 number, since 2×1210011122021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210011121987 and 1210011122005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210011122041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1604788910 + ... + 1604789663.

It is an arithmetic number, because the mean of its divisors is an integer number (168502875135).

Almost surely, 2^{1210011122021} is an apocalyptic number.

It is an amenable number.

1210011122021 is a deficient number, since it is larger than the sum of its proper divisors (138011879059).

1210011122021 is a wasteful number, since it uses less digits than its factorization.

1210011122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3209578615.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1210011122021 its reverse (1202211100121), we get a palindrome (2412222222142).

The spelling of 1210011122021 in words is "one trillion, two hundred ten billion, eleven million, one hundred twenty-two thousand, twenty-one".