211213213122021 has 32 divisors (see below), whose sum is σ = 323394458956800. Its totient is φ = 121268566644480.

The previous prime is 211213213121879. The next prime is 211213213122071. The reversal of 211213213122021 is 120221312312112.

It is not a de Polignac number, because 211213213122021 - 2²⁷ = 211213078904293 is a prime.

It is a super-2 number, since 2×211213213122021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211213213121982 and 211213213122000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211213213122071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32246520 + ... + 38239566.

It is an arithmetic number, because the mean of its divisors is an integer number (10106076842400).

Almost surely, 2^{211213213122021} is an apocalyptic number.

It is an amenable number.

211213213122021 is a deficient number, since it is larger than the sum of its proper divisors (112181245834779).

211213213122021 is a wasteful number, since it uses less digits than its factorization.

211213213122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6049289.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 211213213122021 its reverse (120221312312112), we get a palindrome (331434525434133).

The spelling of 211213213122021 in words is "two hundred eleven trillion, two hundred thirteen billion, two hundred thirteen million, one hundred twenty-two thousand, twenty-one".