2101996 has 12 divisors (see below), whose sum is σ = 3961552. Its totient is φ = 970128.

The previous prime is 2101961. The next prime is 2102021. The reversal of 2101996 is 6991012.

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, 20160 + ... + 20263.

2^2101996 is an apocalyptic number.

2101996 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2101996 is a deficient number, since it is larger than the sum of its proper divisors (1859556).

2101996 is a wasteful number, since it uses less digits than its factorization.

2101996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40440 (or 40438 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 2101996 is about 1449.8261964801. The cubic root of 2101996 is about 128.0984756515.

It can be divided in two parts, 21019 and 96, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 2101996 in words is "two million, one hundred one thousand, nine hundred ninety-six".