20021222101120 has 128 divisors (see below), whose sum is σ = 51006889520640. Its totient is φ = 7497308442624.

The previous prime is 20021222100961. The next prime is 20021222101171. The reversal of 20021222101120 is 2110122212002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 20021222101094 and 20021222101103.

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, 13777707 + ... + 15161386.

It is an arithmetic number, because the mean of its divisors is an integer number (398491324380).

Almost surely, 2^{20021222101120} is an apocalyptic number.

20021222101120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021222101120 is an abundant number, since it is smaller than the sum of its proper divisors (30985667419520).

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

20021222101120 is a wasteful number, since it uses less digits than its factorization.

20021222101120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28939182 (or 28939170 counting only the distinct ones).

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

Adding to 20021222101120 its reverse (2110122212002), we get a palindrome (22131344313122).

The spelling of 20021222101120 in words is "twenty trillion, twenty-one billion, two hundred twenty-two million, one hundred one thousand, one hundred twenty".