21121210222022 has 32 divisors (see below), whose sum is σ = 34026573588480. Its totient is φ = 9810080485920.

The previous prime is 21121210221983. The next prime is 21121210222037. The reversal of 21121210222022 is 22022201212112.

It is a super-2 number, since 2×21121210222022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21121210221985 and 21121210222003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47418578 + ... + 47861925.

It is an arithmetic number, because the mean of its divisors is an integer number (1063330424640).

Almost surely, 2^{21121210222022} is an apocalyptic number.

21121210222022 is a deficient number, since it is larger than the sum of its proper divisors (12905363366458).

21121210222022 is a wasteful number, since it uses less digits than its factorization.

21121210222022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95280668.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21121210222022 its reverse (22022201212112), we get a palindrome (43143411434134).

The spelling of 21121210222022 in words is "twenty-one trillion, one hundred twenty-one billion, two hundred ten million, two hundred twenty-two thousand, twenty-two".