1002152121231 has 32 divisors (see below), whose sum is σ = 1363111859200. Its totient is φ = 654785389440.

The previous prime is 1002152121193. The next prime is 1002152121241. The reversal of 1002152121231 is 1321212512001.

It is not a de Polignac number, because 1002152121231 - 2²¹ = 1002150024079 is a prime.

It is a super-2 number, since 2×1002152121231² (a number of 25 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 = 1002152121198 and 1002152121207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002152121241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23443305 + ... + 23486013.

It is an arithmetic number, because the mean of its divisors is an integer number (42597245600).

Almost surely, 2^{1002152121231} is an apocalyptic number.

1002152121231 is a deficient number, since it is larger than the sum of its proper divisors (360959737969).

1002152121231 is a wasteful number, since it uses less digits than its factorization.

1002152121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43519.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 1002152121231 its reverse (1321212512001), we get a palindrome (2323364633232).

The spelling of 1002152121231 in words is "one trillion, two billion, one hundred fifty-two million, one hundred twenty-one thousand, two hundred thirty-one".