201211942 has 16 divisors (see below), whose sum is σ = 307187712. Its totient is φ = 98831880.

The previous prime is 201211909. The next prime is 201211943. The reversal of 201211942 is 249112102.

201211942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201211942² = 80972491206822728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201211943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22317 + ... + 30007.

It is an arithmetic number, because the mean of its divisors is an integer number (19199232).

Almost surely, 2^201211942 is an apocalyptic number.

201211942 is a deficient number, since it is larger than the sum of its proper divisors (105975770).

201211942 is a wasteful number, since it uses less digits than its factorization.

201211942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7923.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 201211942 is about 14184.9195274418. The cubic root of 201211942 is about 585.9824162740.

The spelling of 201211942 in words is "two hundred one million, two hundred eleven thousand, nine hundred forty-two".