212121012202 has 32 divisors (see below), whose sum is σ = 347778883584. Its totient is φ = 96232206000.

The previous prime is 212121012163. The next prime is 212121012221. The reversal of 212121012202 is 202210121212.

It is a happy number.

It is a super-3 number, since 3×212121012202³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41696103 + ... + 41701189.

It is an arithmetic number, because the mean of its divisors is an integer number (10868090112).

Almost surely, 2^212121012202 is an apocalyptic number.

212121012202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212121012202 is a deficient number, since it is larger than the sum of its proper divisors (135657871382).

212121012202 is a wasteful number, since it uses less digits than its factorization.

212121012202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8394.

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

Adding to 212121012202 its reverse (202210121212), we get a palindrome (414331133414).

The spelling of 212121012202 in words is "two hundred twelve billion, one hundred twenty-one million, twelve thousand, two hundred two".