101921851 has 16 divisors (see below), whose sum is σ = 110436480. Its totient is φ = 93709440.

The previous prime is 101921843. The next prime is 101921861. The reversal of 101921851 is 158129101.

It is not a de Polignac number, because 101921851 - 2³ = 101921843 is a prime.

It is a super-2 number, since 2×101921851² = 20776127422532402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101921801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307756 + ... + 308086.

It is an arithmetic number, because the mean of its divisors is an integer number (6902280).

Almost surely, 2^101921851 is an apocalyptic number.

101921851 is a deficient number, since it is larger than the sum of its proper divisors (8514629).

101921851 is a wasteful number, since it uses less digits than its factorization.

101921851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714.

The product of its (nonzero) digits is 720, while the sum is 28.

The square root of 101921851 is about 10095.6352449957. The cubic root of 101921851 is about 467.1135162637.

The spelling of 101921851 in words is "one hundred one million, nine hundred twenty-one thousand, eight hundred fifty-one".