202121103202131 has 8 divisors (see below), whose sum is σ = 269495156870800. Its totient is φ = 134747225834112.

The previous prime is 202121103202103. The next prime is 202121103202159. The reversal of 202121103202131 is 131202301121202.

It is an interprime number because it is at equal distance from previous prime (202121103202103) and next prime (202121103202159).

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

It is not a de Polignac number, because 202121103202131 - 2¹⁰ = 202121103201107 is a prime.

It is a super-2 number, since 2×202121103202131² (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 = 202121103202098 and 202121103202107.

It is not an unprimeable number, because it can be changed into a prime (202121103202181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41376490 + ... + 46002783.

It is an arithmetic number, because the mean of its divisors is an integer number (33686894608850).

Almost surely, 2^{202121103202131} is an apocalyptic number.

202121103202131 is a deficient number, since it is larger than the sum of its proper divisors (67374053668669).

202121103202131 is an equidigital number, since it uses as much as digits as its factorization.

202121103202131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88150325.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 202121103202131 its reverse (131202301121202), we get a palindrome (333323404323333).

The spelling of 202121103202131 in words is "two hundred two trillion, one hundred twenty-one billion, one hundred three million, two hundred two thousand, one hundred thirty-one".