221012001210202 has 4 divisors (see below), whose sum is σ = 331518001815306. Its totient is φ = 110506000605100.

The previous prime is 221012001210193. The next prime is 221012001210251. The reversal of 221012001210202 is 202012100210122.

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., 148497596749681 + 72514404460521 = 12185959^2 + 8515539^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55253000302549 + ... + 55253000302552.

Almost surely, 2^{221012001210202} is an apocalyptic number.

221012001210202 is a deficient number, since it is larger than the sum of its proper divisors (110506000605104).

221012001210202 is a wasteful number, since it uses less digits than its factorization.

221012001210202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110506000605103.

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

Adding to 221012001210202 its reverse (202012100210122), we get a palindrome (423024101420324).

The spelling of 221012001210202 in words is "two hundred twenty-one trillion, twelve billion, one million, two hundred ten thousand, two hundred two".