21120102231302 has 4 divisors (see below), whose sum is σ = 31680153346956. Its totient is φ = 10560051115650.

The previous prime is 21120102231299. The next prime is 21120102231307. The reversal of 21120102231302 is 20313220102112.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120102231307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5280025557824 + ... + 5280025557827.

It is an arithmetic number, because the mean of its divisors is an integer number (7920038336739).

Almost surely, 2^{21120102231302} is an apocalyptic number.

21120102231302 is a deficient number, since it is larger than the sum of its proper divisors (10560051115654).

21120102231302 is a wasteful number, since it uses less digits than its factorization.

21120102231302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10560051115653.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21120102231302 its reverse (20313220102112), we get a palindrome (41433322333414).

The spelling of 21120102231302 in words is "twenty-one trillion, one hundred twenty billion, one hundred two million, two hundred thirty-one thousand, three hundred two".