2251121035415 has 16 divisors (see below), whose sum is σ = 3089216931840. Its totient is φ = 1542643239840.

The previous prime is 2251121035409. The next prime is 2251121035417. The reversal of 2251121035415 is 5145301211522.

It is not a de Polignac number, because 2251121035415 - 2⁶ = 2251121035351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251121035417) 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, 20415335 + ... + 20525304.

It is an arithmetic number, because the mean of its divisors is an integer number (193076058240).

Almost surely, 2^{2251121035415} is an apocalyptic number.

2251121035415 is a deficient number, since it is larger than the sum of its proper divisors (838095896425).

2251121035415 is a wasteful number, since it uses less digits than its factorization.

2251121035415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40942222.

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 2251121035415 its reverse (5145301211522), we get a palindrome (7396422246937).

The spelling of 2251121035415 in words is "two trillion, two hundred fifty-one billion, one hundred twenty-one million, thirty-five thousand, four hundred fifteen".