21023110121302 has 16 divisors (see below), whose sum is σ = 31568205600000. Its totient is φ = 10500377164200.

The previous prime is 21023110121183. The next prime is 21023110121303. The reversal of 21023110121302 is 20312101132012.

It is a self number, because there is not a number n which added to its sum of digits gives 21023110121302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023110121303) 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, 18360199 + ... + 19471597.

It is an arithmetic number, because the mean of its divisors is an integer number (1973012850000).

Almost surely, 2^{21023110121302} is an apocalyptic number.

21023110121302 is a deficient number, since it is larger than the sum of its proper divisors (10545095478698).

21023110121302 is a wasteful number, since it uses less digits than its factorization.

21023110121302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121451.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21023110121302 its reverse (20312101132012), we get a palindrome (41335211253314).

The spelling of 21023110121302 in words is "twenty-one trillion, twenty-three billion, one hundred ten million, one hundred twenty-one thousand, three hundred two".