121010222121123 has 16 divisors (see below), whose sum is σ = 162851555671200. Its totient is φ = 79921406315520.

The previous prime is 121010222121097. The next prime is 121010222121127. The reversal of 121010222121123 is 321121222010121.

It is not a de Polignac number, because 121010222121123 - 2⁹ = 121010222120611 is a prime.

It is a super-2 number, since 2×121010222121123² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121010222121123.

It is not an unprimeable number, because it can be changed into a prime (121010222121127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25474668 + ... + 29849273.

It is an arithmetic number, because the mean of its divisors is an integer number (10178222229450).

Almost surely, 2^{121010222121123} is an apocalyptic number.

121010222121123 is a deficient number, since it is larger than the sum of its proper divisors (41841333550077).

121010222121123 is a wasteful number, since it uses less digits than its factorization.

121010222121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55330742.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 121010222121123 its reverse (321121222010121), we get a palindrome (442131444131244).

The spelling of 121010222121123 in words is "one hundred twenty-one trillion, ten billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty-three".