20103121023 has 8 divisors (see below), whose sum is σ = 26804837808. Its totient is φ = 13401742464.

The previous prime is 20103120977. The next prime is 20103121069. The reversal of 20103121023 is 32012130102.

It is an interprime number because it is at equal distance from previous prime (20103120977) and next prime (20103121069).

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

It is not a de Polignac number, because 20103121023 - 2⁹ = 20103120511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20103120993 and 20103121011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103121223) 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, 137265 + ... + 242997.

It is an arithmetic number, because the mean of its divisors is an integer number (3350604726).

Almost surely, 2^20103121023 is an apocalyptic number.

20103121023 is a deficient number, since it is larger than the sum of its proper divisors (6701716785).

20103121023 is a wasteful number, since it uses less digits than its factorization.

20103121023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169113.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20103121023 its reverse (32012130102), we get a palindrome (52115251125).

The spelling of 20103121023 in words is "twenty billion, one hundred three million, one hundred twenty-one thousand, twenty-three".