20010221221122 has 40 divisors (see below), whose sum is σ = 48913874100432. Its totient is φ = 6063703399800.

The previous prime is 20010221221073. The next prime is 20010221221187. The reversal of 20010221221122 is 22112212201002.

It is a happy number.

20010221221122 is a `hidden beast` number, since 200 + 1 + 0 + 221 + 221 + 1 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20010221221095 and 20010221221104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5614538404 + ... + 5614541967.

Almost surely, 2^{20010221221122} is an apocalyptic number.

20010221221122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20010221221122 is an abundant number, since it is smaller than the sum of its proper divisors (28903652879310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20010221221122 is a wasteful number, since it uses less digits than its factorization.

20010221221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11229080396 (or 11229080387 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20010221221122 its reverse (22112212201002), we get a palindrome (42122433422124).

The spelling of 20010221221122 in words is "twenty trillion, ten billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty-two".