2121551435150 has 192 divisors, whose sum is σ = 4777301376000. Its totient is φ = 684745850880.

The previous prime is 2121551435141. The next prime is 2121551435173. The reversal of 2121551435150 is 515341551212.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2121551435150.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 832306076 + ... + 832308624.

It is an arithmetic number, because the mean of its divisors is an integer number (24881778000).

Almost surely, 2^{2121551435150} is an apocalyptic number.

2121551435150 is an abundant number, since it is smaller than the sum of its proper divisors (2655749940850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121551435150 is a wasteful number, since it uses less digits than its factorization.

2121551435150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3331 (or 3326 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 35.

Adding to 2121551435150 its reverse (515341551212), we get a palindrome (2636892986362).

The spelling of 2121551435150 in words is "two trillion, one hundred twenty-one billion, five hundred fifty-one million, four hundred thirty-five thousand, one hundred fifty".