212111402 has 16 divisors (see below), whose sum is σ = 338170560. Its totient is φ = 99496512.

The previous prime is 212111399. The next prime is 212111437. The reversal of 212111402 is 204111212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23183 + ... + 31010.

It is an arithmetic number, because the mean of its divisors is an integer number (21135660).

Almost surely, 2^212111402 is an apocalyptic number.

212111402 is a deficient number, since it is larger than the sum of its proper divisors (126059158).

212111402 is a wasteful number, since it uses less digits than its factorization.

212111402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54317.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 212111402 is about 14564.0448365143. The cubic root of 212111402 is about 596.3776209233.

Adding to 212111402 its reverse (204111212), we get a palindrome (416222614).

The spelling of 212111402 in words is "two hundred twelve million, one hundred eleven thousand, four hundred two".