20310102121 has 32 divisors (see below), whose sum is σ = 21866112000. Its totient is φ = 18831955968.

The previous prime is 20310102107. The next prime is 20310102143. The reversal of 20310102121 is 12120101302.

It is not a de Polignac number, because 20310102121 - 2¹³ = 20310093929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20310102101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14113320 + ... + 14114758.

It is an arithmetic number, because the mean of its divisors is an integer number (683316000).

Almost surely, 2^20310102121 is an apocalyptic number.

It is an amenable number.

20310102121 is a deficient number, since it is larger than the sum of its proper divisors (1556009879).

20310102121 is a wasteful number, since it uses less digits than its factorization.

20310102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20310102121 its reverse (12120101302), we get a palindrome (32430203423).

The spelling of 20310102121 in words is "twenty billion, three hundred ten million, one hundred two thousand, one hundred twenty-one".