212102220202 has 4 divisors (see below), whose sum is σ = 318153330306. Its totient is φ = 106051110100.

The previous prime is 212102220163. The next prime is 212102220223. The reversal of 212102220202 is 202022201212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 195639020721 + 16463199481 = 442311^2 + 128309^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53025555049 + ... + 53025555052.

Almost surely, 2^212102220202 is an apocalyptic number.

212102220202 is a deficient number, since it is larger than the sum of its proper divisors (106051110104).

212102220202 is a wasteful number, since it uses less digits than its factorization.

212102220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106051110103.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 212102220202 its reverse (202022201212), we get a palindrome (414124421414).

The spelling of 212102220202 in words is "two hundred twelve billion, one hundred two million, two hundred twenty thousand, two hundred two".