20000221121120 has 96 divisors (see below), whose sum is σ = 51755136300000. Its totient is φ = 7269857222656.

The previous prime is 20000221121113. The next prime is 20000221121123. The reversal of 20000221121120 is 2112112200002.

It is a junction number, because it is equal to n+sod(n) for n = 20000221121095 and 20000221121104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000221121123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126697370 + ... + 126855129.

It is an arithmetic number, because the mean of its divisors is an integer number (539116003125).

Almost surely, 2^{20000221121120} is an apocalyptic number.

20000221121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000221121120 is an abundant number, since it is smaller than the sum of its proper divisors (31754915178880).

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

20000221121120 is a wasteful number, since it uses less digits than its factorization.

20000221121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253552560 (or 253552552 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20000221121120 its reverse (2112112200002), we get a palindrome (22112333321122).

The spelling of 20000221121120 in words is "twenty trillion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty".