212000201021021 has 64 divisors (see below), whose sum is σ = 253733449052160. Its totient is φ = 173366278525440.

The previous prime is 212000201021017. The next prime is 212000201021023. The reversal of 212000201021021 is 120120102000212.

It is not a de Polignac number, because 212000201021021 - 2² = 212000201021017 is a prime.

It is a super-5 number, since 5×212000201021021⁵ (a number of 73 digits) contains 55555 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212000201020987 and 212000201021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212000201021023) 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, 8235883211 + ... + 8235908951.

It is an arithmetic number, because the mean of its divisors is an integer number (3964585141440).

Almost surely, 2^{212000201021021} is an apocalyptic number.

It is an amenable number.

212000201021021 is a deficient number, since it is larger than the sum of its proper divisors (41733248031139).

212000201021021 is a wasteful number, since it uses less digits than its factorization.

212000201021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28794.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212000201021021 its reverse (120120102000212), we get a palindrome (332120303021233).

The spelling of 212000201021021 in words is "two hundred twelve trillion, two hundred one million, twenty-one thousand, twenty-one".