21022121001022 has 32 divisors (see below), whose sum is σ = 33371464803840. Its totient is φ = 9911311835040.

The previous prime is 21022121001019. The next prime is 21022121001041. The reversal of 21022121001022 is 22010012122012.

It is a happy number.

It is a super-2 number, since 2×21022121001022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21022121000987 and 21022121001005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28385004 + ... + 29116192.

It is an arithmetic number, because the mean of its divisors is an integer number (1042858275120).

Almost surely, 2^{21022121001022} is an apocalyptic number.

21022121001022 is a deficient number, since it is larger than the sum of its proper divisors (12349343802818).

21022121001022 is a wasteful number, since it uses less digits than its factorization.

21022121001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740088.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21022121001022 its reverse (22010012122012), we get a palindrome (43032133123034).

The spelling of 21022121001022 in words is "twenty-one trillion, twenty-two billion, one hundred twenty-one million, one thousand, twenty-two".