11211665221662 has 16 divisors (see below), whose sum is σ = 22900422580992. Its totient is φ = 3657706384280.

The previous prime is 11211665221651. The next prime is 11211665221699. The reversal of 11211665221662 is 26612256611211.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19878838764 + ... + 19878839327.

It is an arithmetic number, because the mean of its divisors is an integer number (1431276411312).

Almost surely, 2^{11211665221662} is an apocalyptic number.

11211665221662 is an abundant number, since it is smaller than the sum of its proper divisors (11688757359330).

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

11211665221662 is a wasteful number, since it uses less digits than its factorization.

11211665221662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39757678143.

The product of its digits is 103680, while the sum is 42.

The spelling of 11211665221662 in words is "eleven trillion, two hundred eleven billion, six hundred sixty-five million, two hundred twenty-one thousand, six hundred sixty-two".