212022223121 has 16 divisors (see below), whose sum is σ = 221742420480. Its totient is φ = 202344384000.

The previous prime is 212022223097. The next prime is 212022223139. The reversal of 212022223121 is 121322220212.

It is a cyclic number.

It is not a de Polignac number, because 212022223121 - 2¹⁸ = 212021960977 is a prime.

It is a super-2 number, since 2×212022223121² (a number of 23 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 = 212022223093 and 212022223102.

It is not an unprimeable number, because it can be changed into a prime (212022223151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20601545 + ... + 20611833.

It is an arithmetic number, because the mean of its divisors is an integer number (13858901280).

Almost surely, 2^212022223121 is an apocalyptic number.

It is an amenable number.

212022223121 is a deficient number, since it is larger than the sum of its proper divisors (9720197359).

212022223121 is a wasteful number, since it uses less digits than its factorization.

212022223121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12256.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 212022223121 its reverse (121322220212), we get a palindrome (333344443333).

The spelling of 212022223121 in words is "two hundred twelve billion, twenty-two million, two hundred twenty-three thousand, one hundred twenty-one".