21011220001022 has 16 divisors (see below), whose sum is σ = 31530312340800. Its totient is φ = 10501116151680.

The previous prime is 21011220001003. The next prime is 21011220001049. The reversal of 21011220001022 is 22010002211012.

It is a junction number, because it is equal to n+sod(n) for n = 21011220000988 and 21011220001006.

It is a congruent number.

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, 298042754 + ... + 298113242.

It is an arithmetic number, because the mean of its divisors is an integer number (1970644521300).

Almost surely, 2^{21011220001022} is an apocalyptic number.

21011220001022 is a deficient number, since it is larger than the sum of its proper divisors (10519092339778).

21011220001022 is a wasteful number, since it uses less digits than its factorization.

21011220001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132131.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21011220001022 its reverse (22010002211012), we get a palindrome (43021222212034).

The spelling of 21011220001022 in words is "twenty-one trillion, eleven billion, two hundred twenty million, one thousand, twenty-two".