21142103402310 has 32 divisors (see below), whose sum is σ = 55353870726912. Its totient is φ = 5125358400480.

The previous prime is 21142103402309. The next prime is 21142103402317. The reversal of 21142103402310 is 1320430124112.

It is a super-2 number, since 2×21142103402310² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21142103402317) 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, 32033489674 + ... + 32033490333.

It is an arithmetic number, because the mean of its divisors is an integer number (1729808460216).

Almost surely, 2^{21142103402310} is an apocalyptic number.

21142103402310 is an abundant number, since it is smaller than the sum of its proper divisors (34211767324602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21142103402310 is a wasteful number, since it uses less digits than its factorization.

21142103402310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64066980028.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21142103402310 its reverse (1320430124112), we get a palindrome (22462533526422).

The spelling of 21142103402310 in words is "twenty-one trillion, one hundred forty-two billion, one hundred three million, four hundred two thousand, three hundred ten".