20021121011120 has 40 divisors (see below), whose sum is σ = 46713590878416. Its totient is φ = 7980149991168.

The previous prime is 20021121011069. The next prime is 20021121011159. The reversal of 20021121011120 is 2111012112002.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 20021121011095 and 20021121011104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442139927 + ... + 442185206.

Almost surely, 2^{20021121011120} is an apocalyptic number.

20021121011120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021121011120 is an abundant number, since it is smaller than the sum of its proper divisors (26692469867296).

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

20021121011120 is a wasteful number, since it uses less digits than its factorization.

20021121011120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884325429 (or 884325423 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20021121011120 its reverse (2111012112002), we get a palindrome (22132133123122).

The spelling of 20021121011120 in words is "twenty trillion, twenty-one billion, one hundred twenty-one million, eleven thousand, one hundred twenty".