20213121011302 has 16 divisors (see below), whose sum is σ = 30836677870800. Its totient is φ = 9934262870560.

The previous prime is 20213121011297. The next prime is 20213121011387. The reversal of 20213121011302 is 20311012131202.

It is a super-2 number, since 2×20213121011302² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20213121011302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7442677 + ... + 9788752.

It is an arithmetic number, because the mean of its divisors is an integer number (1927292366925).

Almost surely, 2^{20213121011302} is an apocalyptic number.

20213121011302 is a deficient number, since it is larger than the sum of its proper divisors (10623556859498).

20213121011302 is a wasteful number, since it uses less digits than its factorization.

20213121011302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17241431.

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

Adding to 20213121011302 its reverse (20311012131202), we get a palindrome (40524133142504).

The spelling of 20213121011302 in words is "twenty trillion, two hundred thirteen billion, one hundred twenty-one million, eleven thousand, three hundred two".