1210021012123 has 16 divisors (see below), whose sum is σ = 1560618236160. Its totient is φ = 910360634400.

The previous prime is 1210021012121. The next prime is 1210021012141. The reversal of 1210021012123 is 3212101200121.

It is not a de Polignac number, because 1210021012123 - 2¹ = 1210021012121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210021012097 and 1210021012106.

It is not an unprimeable number, because it can be changed into a prime (1210021012121) 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, 270938433 + ... + 270942898.

It is an arithmetic number, because the mean of its divisors is an integer number (97538639760).

Almost surely, 2^{1210021012123} is an apocalyptic number.

1210021012123 is a deficient number, since it is larger than the sum of its proper divisors (350597224037).

1210021012123 is a wasteful number, since it uses less digits than its factorization.

1210021012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541881378.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1210021012123 its reverse (3212101200121), we get a palindrome (4422122212244).

The spelling of 1210021012123 in words is "one trillion, two hundred ten billion, twenty-one million, twelve thousand, one hundred twenty-three".