22121012110202 has 4 divisors (see below), whose sum is σ = 33181518165306. Its totient is φ = 11060506055100.

The previous prime is 22121012110181. The next prime is 22121012110213. The reversal of 22121012110202 is 20201121012122.

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., 21814980763801 + 306031346401 = 4670651^2 + 553201^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5530253027549 + ... + 5530253027552.

Almost surely, 2^{22121012110202} is an apocalyptic number.

22121012110202 is a deficient number, since it is larger than the sum of its proper divisors (11060506055104).

22121012110202 is a wasteful number, since it uses less digits than its factorization.

22121012110202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11060506055103.

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

Adding to 22121012110202 its reverse (20201121012122), we get a palindrome (42322133122324).

The spelling of 22121012110202 in words is "twenty-two trillion, one hundred twenty-one billion, twelve million, one hundred ten thousand, two hundred two".