202121012020231 has 16 divisors (see below), whose sum is σ = 203151951129600. Its totient is φ = 201093521142528.

The previous prime is 202121012020223. The next prime is 202121012020243. The reversal of 202121012020231 is 132020210121202.

It is a cyclic number.

It is not a de Polignac number, because 202121012020231 - 2³ = 202121012020223 is a prime.

It is a super-2 number, since 2×202121012020231² (a number of 29 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 = 202121012020199 and 202121012020208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202121012020201) 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, 211964140 + ... + 212915566.

It is an arithmetic number, because the mean of its divisors is an integer number (12696996945600).

Almost surely, 2^{202121012020231} is an apocalyptic number.

202121012020231 is a deficient number, since it is larger than the sum of its proper divisors (1030939109369).

202121012020231 is an equidigital number, since it uses as much as digits as its factorization.

202121012020231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953238.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 202121012020231 its reverse (132020210121202), we get a palindrome (334141222141433).

The spelling of 202121012020231 in words is "two hundred two trillion, one hundred twenty-one billion, twelve million, twenty thousand, two hundred thirty-one".