20102121295 has 16 divisors (see below), whose sum is σ = 24241337568. Its totient is φ = 16002656640.

The previous prime is 20102121293. The next prime is 20102121301. The reversal of 20102121295 is 59212120102.

It is not a de Polignac number, because 20102121295 - 2¹ = 20102121293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102121293) 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, 1094740 + ... + 1112950.

It is an arithmetic number, because the mean of its divisors is an integer number (1515083598).

Almost surely, 2^20102121295 is an apocalyptic number.

20102121295 is a deficient number, since it is larger than the sum of its proper divisors (4139216273).

20102121295 is a wasteful number, since it uses less digits than its factorization.

20102121295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19290.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 20102121295 its reverse (59212120102), we get a palindrome (79314241397).

The spelling of 20102121295 in words is "twenty billion, one hundred two million, one hundred twenty-one thousand, two hundred ninety-five".