212323133332021 has 16 divisors (see below), whose sum is σ = 223248295226880. Its totient is φ = 201664012112640.

The previous prime is 212323133331989. The next prime is 212323133332031. The reversal of 212323133332021 is 120233331323212.

It is a cyclic number.

It is not a de Polignac number, because 212323133332021 - 2⁵ = 212323133331989 is a prime.

It is a super-2 number, since 2×212323133332021² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212323133332031) 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, 92945256 + ... + 95202241.

It is an arithmetic number, because the mean of its divisors is an integer number (13953018451680).

Almost surely, 2^{212323133332021} is an apocalyptic number.

It is an amenable number.

212323133332021 is a deficient number, since it is larger than the sum of its proper divisors (10925161894859).

212323133332021 is a wasteful number, since it uses less digits than its factorization.

212323133332021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188148204.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 212323133332021 its reverse (120233331323212), we get a palindrome (332556464655233).

The spelling of 212323133332021 in words is "two hundred twelve trillion, three hundred twenty-three billion, one hundred thirty-three million, three hundred thirty-two thousand, twenty-one".