1210212210202 has 4 divisors (see below), whose sum is σ = 1815318315306. Its totient is φ = 605106105100.

The previous prime is 1210212210091. The next prime is 1210212210241. The reversal of 1210212210202 is 2020122120121.

It is a happy number.

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., 1106958598641 + 103253611561 = 1052121^2 + 321331^2 .

It is a super-2 number, since 2×1210212210202² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302553052549 + ... + 302553052552.

Almost surely, 2^{1210212210202} is an apocalyptic number.

1210212210202 is a deficient number, since it is larger than the sum of its proper divisors (605106105104).

1210212210202 is an equidigital number, since it uses as much as digits as its factorization.

1210212210202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605106105103.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1210212210202 its reverse (2020122120121), we get a palindrome (3230334330323).

The spelling of 1210212210202 in words is "one trillion, two hundred ten billion, two hundred twelve million, two hundred ten thousand, two hundred two".