21113011145154 has 32 divisors (see below), whose sum is σ = 43434711633600. Its totient is φ = 6836813785152.

The previous prime is 21113011145143. The next prime is 21113011145167. The reversal of 21113011145154 is 45154111031112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73810329 + ... + 74095820.

It is an arithmetic number, because the mean of its divisors is an integer number (1357334738550).

Almost surely, 2^{21113011145154} is an apocalyptic number.

21113011145154 is an abundant number, since it is smaller than the sum of its proper divisors (22321700488446).

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

21113011145154 is a wasteful number, since it uses less digits than its factorization.

21113011145154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147906834.

The product of its (nonzero) digits is 2400, while the sum is 30.

Adding to 21113011145154 its reverse (45154111031112), we get a palindrome (66267122176266).

The spelling of 21113011145154 in words is "twenty-one trillion, one hundred thirteen billion, eleven million, one hundred forty-five thousand, one hundred fifty-four".