21201101092 has 24 divisors (see below), whose sum is σ = 39098388672. Its totient is φ = 10039260000.

The previous prime is 21201101083. The next prime is 21201101101. The reversal of 21201101092 is 29010110212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21201101083) and next prime (21201101101).

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, 1131534 + ... + 1150117.

It is an arithmetic number, because the mean of its divisors is an integer number (1629099528).

Almost surely, 2^21201101092 is an apocalyptic number.

It is an amenable number.

21201101092 is a deficient number, since it is larger than the sum of its proper divisors (17897287580).

21201101092 is a wasteful number, since it uses less digits than its factorization.

21201101092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281779 (or 2281777 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 21201101092 in words is "twenty-one billion, two hundred one million, one hundred one thousand, ninety-two".