212111221202 has 8 divisors (see below), whose sum is σ = 318358850556. Its totient is φ = 105991604352.

The previous prime is 212111221183. The next prime is 212111221211. The reversal of 212111221202 is 202122111212.

It can be written as a sum of positive squares in 2 ways, for example, as 178549347601 + 33561873601 = 422551^2 + 183199^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 31998983 + ... + 32005610.

Almost surely, 2^212111221202 is an apocalyptic number.

212111221202 is a deficient number, since it is larger than the sum of its proper divisors (106247629354).

212111221202 is a wasteful number, since it uses less digits than its factorization.

212111221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64006252.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212111221202 its reverse (202122111212), we get a palindrome (414233332414).

The spelling of 212111221202 in words is "two hundred twelve billion, one hundred eleven million, two hundred twenty-one thousand, two hundred two".