2122221122021 has 64 divisors (see below), whose sum is σ = 2929699971072. Its totient is φ = 1483738560000.

The previous prime is 2122221122011. The next prime is 2122221122027. The reversal of 2122221122021 is 1202211222212.

It is a cyclic number.

It is not a de Polignac number, because 2122221122021 - 2⁶ = 2122221121957 is a prime.

It is a super-2 number, since 2×2122221122021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2122221121984 and 2122221122002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122221122027) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11026706 + ... + 11217516.

It is an arithmetic number, because the mean of its divisors is an integer number (45776562048).

Almost surely, 2^{2122221122021} is an apocalyptic number.

It is an amenable number.

2122221122021 is a deficient number, since it is larger than the sum of its proper divisors (807478849051).

2122221122021 is a wasteful number, since it uses less digits than its factorization.

2122221122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191154.

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

Adding to 2122221122021 its reverse (1202211222212), we get a palindrome (3324432344233).

The spelling of 2122221122021 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-two thousand, twenty-one".