121602150551 has 32 divisors (see below), whose sum is σ = 143197286400. Its totient is φ = 101094174720.

The previous prime is 121602150503. The next prime is 121602150581. The reversal of 121602150551 is 155051206121.

It is not a de Polignac number, because 121602150551 - 2²² = 121597956247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121602150581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57548471 + ... + 57550583.

It is an arithmetic number, because the mean of its divisors is an integer number (4474915200).

Almost surely, 2^121602150551 is an apocalyptic number.

121602150551 is a deficient number, since it is larger than the sum of its proper divisors (21595135849).

121602150551 is a wasteful number, since it uses less digits than its factorization.

121602150551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3239.

The product of its (nonzero) digits is 3000, while the sum is 29.

Adding to 121602150551 its reverse (155051206121), we get a palindrome (276653356672).

The spelling of 121602150551 in words is "one hundred twenty-one billion, six hundred two million, one hundred fifty thousand, five hundred fifty-one".