20310121615426 has 16 divisors (see below), whose sum is σ = 30981710505600. Its totient is φ = 9982886658768.

The previous prime is 20310121615393. The next prime is 20310121615477. The reversal of 20310121615426 is 62451612101302.

It is a super-2 number, since 2×20310121615426² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20310121615391 and 20310121615400.

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, 29105980 + ... + 29795608.

It is an arithmetic number, because the mean of its divisors is an integer number (1936356906600).

Almost surely, 2^{20310121615426} is an apocalyptic number.

20310121615426 is a deficient number, since it is larger than the sum of its proper divisors (10671588890174).

20310121615426 is a wasteful number, since it uses less digits than its factorization.

20310121615426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939273.

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 20310121615426 its reverse (62451612101302), we get a palindrome (82761733716728).

The spelling of 20310121615426 in words is "twenty trillion, three hundred ten billion, one hundred twenty-one million, six hundred fifteen thousand, four hundred twenty-six".