22201021021012 has 6 divisors (see below), whose sum is σ = 38851786786778. Its totient is φ = 11100510510504.

The previous prime is 22201021021009. The next prime is 22201021021021. The reversal of 22201021021012 is 21012012010222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20674081359376 + 1526939661636 = 4546876^2 + 1235694^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775127627623 + ... + 2775127627630.

Almost surely, 2^{22201021021012} is an apocalyptic number.

It is an amenable number.

22201021021012 is a deficient number, since it is larger than the sum of its proper divisors (16650765765766).

22201021021012 is a wasteful number, since it uses less digits than its factorization.

22201021021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5550255255257 (or 5550255255255 counting only the distinct ones).

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

Adding to 22201021021012 its reverse (21012012010222), we get a palindrome (43213033031234).

The spelling of 22201021021012 in words is "twenty-two trillion, two hundred one billion, twenty-one million, twenty-one thousand, twelve".