21166012761022 has 8 divisors (see below), whose sum is σ = 31754436156072. Its totient is φ = 10581200709000.

The previous prime is 21166012761011. The next prime is 21166012761109. The reversal of 21166012761022 is 22016721066112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21166012761022² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 902821104 + ... + 902844547.

It is an arithmetic number, because the mean of its divisors is an integer number (3969304519509).

Almost surely, 2^{21166012761022} is an apocalyptic number.

21166012761022 is a deficient number, since it is larger than the sum of its proper divisors (10588423395050).

21166012761022 is a wasteful number, since it uses less digits than its factorization.

21166012761022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805671514.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 21166012761022 in words is "twenty-one trillion, one hundred sixty-six billion, twelve million, seven hundred sixty-one thousand, twenty-two".