101919012 has 48 divisors (see below), whose sum is σ = 271176192. Its totient is φ = 29514240.

The previous prime is 101919011. The next prime is 101919043. The reversal of 101919012 is 210919101.

It is a super-2 number, since 2×101919012² = 20774970014112288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101919011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16564 + ... + 21867.

It is an arithmetic number, because the mean of its divisors is an integer number (5649504).

Almost surely, 2^101919012 is an apocalyptic number.

101919012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101919012 is an abundant number, since it is smaller than the sum of its proper divisors (169257180).

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

101919012 is a wasteful number, since it uses less digits than its factorization.

101919012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38468 (or 38466 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 24.

The square root of 101919012 is about 10095.4946386990. The cubic root of 101919012 is about 467.1091791251.

The spelling of 101919012 in words is "one hundred one million, nine hundred nineteen thousand, twelve".