11215410981 has 16 divisors (see below), whose sum is σ = 15460428288. Its totient is φ = 7224422400.

The previous prime is 11215410979. The next prime is 11215410989. The reversal of 11215410981 is 18901451211.

It is not a de Polignac number, because 11215410981 - 2¹ = 11215410979 is a prime.

It is a super-2 number, since 2×11215410981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11215410989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34456 + ... + 153681.

It is an arithmetic number, because the mean of its divisors is an integer number (966276768).

Almost surely, 2^11215410981 is an apocalyptic number.

It is an amenable number.

11215410981 is a deficient number, since it is larger than the sum of its proper divisors (4245017307).

11215410981 is a wasteful number, since it uses less digits than its factorization.

11215410981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188812.

The product of its (nonzero) digits is 2880, while the sum is 33.

The spelling of 11215410981 in words is "eleven billion, two hundred fifteen million, four hundred ten thousand, nine hundred eighty-one".