122171950 has 12 divisors (see below), whose sum is σ = 227239920. Its totient is φ = 48868760.

The previous prime is 122171947. The next prime is 122171953. The reversal of 122171950 is 59171221.

It is an interprime number because it is at equal distance from previous prime (122171947) and next prime (122171953).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122171953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1221670 + ... + 1221769.

It is an arithmetic number, because the mean of its divisors is an integer number (18936660).

Almost surely, 2^122171950 is an apocalyptic number.

122171950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122171950 is a deficient number, since it is larger than the sum of its proper divisors (105067970).

122171950 is a wasteful number, since it uses less digits than its factorization.

122171950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443451 (or 2443446 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 122171950 is about 11053.1420872076. The cubic root of 122171950 is about 496.2004668988.

The spelling of 122171950 in words is "one hundred twenty-two million, one hundred seventy-one thousand, nine hundred fifty".