1922120217 has 12 divisors (see below), whose sum is σ = 2796371760. Its totient is φ = 1272193848.

The previous prime is 1922120209. The next prime is 1922120227. The reversal of 1922120217 is 7120212291.

It is not a de Polignac number, because 1922120217 - 2³ = 1922120209 is a prime.

It is a super-2 number, since 2×1922120217² = 7389092257200254178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1922120227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 766983 + ... + 769484.

It is an arithmetic number, because the mean of its divisors is an integer number (233030980).

Almost surely, 2^1922120217 is an apocalyptic number.

It is an amenable number.

1922120217 is a deficient number, since it is larger than the sum of its proper divisors (874251543).

1922120217 is a wasteful number, since it uses less digits than its factorization.

1922120217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536612 (or 1536609 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1922120217 is about 43841.9914807710. The cubic root of 1922120217 is about 1243.3503345807.

The spelling of 1922120217 in words is "one billion, nine hundred twenty-two million, one hundred twenty thousand, two hundred seventeen".