20103121011 has 8 divisors (see below), whose sum is σ = 26808249600. Its totient is φ = 13400036552.

The previous prime is 20103120977. The next prime is 20103121069. The reversal of 20103121011 is 11012130102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20103121011 - 2²⁵ = 20069566579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20103121811) 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, 487935 + ... + 527528.

It is an arithmetic number, because the mean of its divisors is an integer number (3351031200).

Almost surely, 2^20103121011 is an apocalyptic number.

20103121011 is a deficient number, since it is larger than the sum of its proper divisors (6705128589).

20103121011 is a wasteful number, since it uses less digits than its factorization.

20103121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022065.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 20103121011 its reverse (11012130102), we get a palindrome (31115251113).

Subtracting from 20103121011 its reverse (11012130102), we obtain a palindrome (9090990909).

The spelling of 20103121011 in words is "twenty billion, one hundred three million, one hundred twenty-one thousand, eleven".