20212312331357 has 8 divisors (see below), whose sum is σ = 20219072242680. Its totient is φ = 20205553213440.

The previous prime is 20212312331269. The next prime is 20212312331359. The reversal of 20212312331357 is 75313321321202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14136314109241 + 6075998222116 = 3759829^2 + 2464954^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20212312331357 - 2¹⁰ = 20212312330333 is a prime.

It is a super-2 number, since 2×20212312331357² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212312331359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53139869 + ... + 53518877.

It is an arithmetic number, because the mean of its divisors is an integer number (2527384030335).

Almost surely, 2^{20212312331357} is an apocalyptic number.

It is an amenable number.

20212312331357 is a deficient number, since it is larger than the sum of its proper divisors (6759911323).

20212312331357 is a wasteful number, since it uses less digits than its factorization.

20212312331357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396703.

The product of its (nonzero) digits is 45360, while the sum is 35.

Adding to 20212312331357 its reverse (75313321321202), we get a palindrome (95525633652559).

The spelling of 20212312331357 in words is "twenty trillion, two hundred twelve billion, three hundred twelve million, three hundred thirty-one thousand, three hundred fifty-seven".