211221210001092 has 12 divisors (see below), whose sum is σ = 492849490002576. Its totient is φ = 70407070000360.

The previous prime is 211221210001091. The next prime is 211221210001211. The reversal of 211221210001092 is 290100012122112.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×211221210001092² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211221210001091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8800883750034 + ... + 8800883750057.

It is an arithmetic number, because the mean of its divisors is an integer number (41070790833548).

Almost surely, 2^{211221210001092} is an apocalyptic number.

It is an amenable number.

211221210001092 is an abundant number, since it is smaller than the sum of its proper divisors (281628280001484).

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

211221210001092 is a wasteful number, since it uses less digits than its factorization.

211221210001092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17601767500098 (or 17601767500096 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 211221210001092 in words is "two hundred eleven trillion, two hundred twenty-one billion, two hundred ten million, one thousand, ninety-two".