21220111001202 has 16 divisors (see below), whose sum is σ = 43587255029952. Its totient is φ = 6882198162480.

The previous prime is 21220111001191. The next prime is 21220111001267. The reversal of 21220111001202 is 20210011102212.

It is a super-2 number, since 2×21220111001202² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47793042574 + ... + 47793043017.

It is an arithmetic number, because the mean of its divisors is an integer number (2724203439372).

Almost surely, 2^{21220111001202} is an apocalyptic number.

21220111001202 is an abundant number, since it is smaller than the sum of its proper divisors (22367144028750).

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

21220111001202 is a wasteful number, since it uses less digits than its factorization.

21220111001202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95586085633.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21220111001202 its reverse (20210011102212), we get a palindrome (41430122103414).

It can be divided in two parts, 2122011 and 1001202, that added together give a palindrome (3123213).

The spelling of 21220111001202 in words is "twenty-one trillion, two hundred twenty billion, one hundred eleven million, one thousand, two hundred two".