121223153051 has 48 divisors (see below), whose sum is σ = 165747345120. Its totient is φ = 87151518720.

The previous prime is 121223153003. The next prime is 121223153057. The reversal of 121223153051 is 150351322121.

It is not a de Polignac number, because 121223153051 - 2³⁰ = 120149411227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121223153051.

It is not an unprimeable number, because it can be changed into a prime (121223153057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27948755 + ... + 27953091.

It is an arithmetic number, because the mean of its divisors is an integer number (3453069690).

Almost surely, 2^121223153051 is an apocalyptic number.

121223153051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121223153051 is a deficient number, since it is larger than the sum of its proper divisors (44524192069).

121223153051 is a wasteful number, since it uses less digits than its factorization.

121223153051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8364 (or 8357 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 121223153051 its reverse (150351322121), we get a palindrome (271574475172).

The spelling of 121223153051 in words is "one hundred twenty-one billion, two hundred twenty-three million, one hundred fifty-three thousand, fifty-one".