20120021111120 has 40 divisors (see below), whose sum is σ = 53461770382464. Its totient is φ = 6898292952192.

The previous prime is 20120021111119. The next prime is 20120021111123. The reversal of 20120021111120 is 2111112002102.

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

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 20120021111095 and 20120021111104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120021111123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17964304004 + ... + 17964305123.

Almost surely, 2^{20120021111120} is an apocalyptic number.

20120021111120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120021111120 is an abundant number, since it is smaller than the sum of its proper divisors (33341749271344).

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

20120021111120 is a wasteful number, since it uses less digits than its factorization.

20120021111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35928609147 (or 35928609141 counting only the distinct ones).

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

Adding to 20120021111120 its reverse (2111112002102), we get a palindrome (22231133113222).

The spelling of 20120021111120 in words is "twenty trillion, one hundred twenty billion, twenty-one million, one hundred eleven thousand, one hundred twenty".