3121202020123 has 16 divisors (see below), whose sum is σ = 3516073666560. Its totient is φ = 2744918510400.

The previous prime is 3121202020121. The next prime is 3121202020147. The reversal of 3121202020123 is 3210202021213.

It is not a de Polignac number, because 3121202020123 - 2¹ = 3121202020121 is a prime.

It is a super-3 number, since 3×3121202020123³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3121202020123.

It is not an unprimeable number, because it can be changed into a prime (3121202020121) 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, 746415 + ... + 2607592.

It is an arithmetic number, because the mean of its divisors is an integer number (219754604160).

Almost surely, 2^{3121202020123} is an apocalyptic number.

3121202020123 is a deficient number, since it is larger than the sum of its proper divisors (394871646437).

3121202020123 is a wasteful number, since it uses less digits than its factorization.

3121202020123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3356778.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 3121202020123 its reverse (3210202021213), we get a palindrome (6331404041336).

The spelling of 3121202020123 in words is "three trillion, one hundred twenty-one billion, two hundred two million, twenty thousand, one hundred twenty-three".