20120121122000 has 40 divisors (see below), whose sum is σ = 48650452877832. Its totient is φ = 8048048448000.

The previous prime is 20120121121957. The next prime is 20120121122039. The reversal of 20120121122000 is 22112102102.

It can be written as a sum of positive squares in 4 ways, for example, as 195003494464 + 19925117627536 = 441592^2 + 4463756^2 .

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

It is a congruent number.

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, 5030028281 + ... + 5030032280.

Almost surely, 2^{20120121122000} is an apocalyptic number.

20120121122000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120121122000 is an abundant number, since it is smaller than the sum of its proper divisors (28530331755832).

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

20120121122000 is a wasteful number, since it uses less digits than its factorization.

20120121122000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10060060584 (or 10060060568 counting only the distinct ones).

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

Adding to 20120121122000 its reverse (22112102102), we get a palindrome (20142233224102).

The spelling of 20120121122000 in words is "twenty trillion, one hundred twenty billion, one hundred twenty-one million, one hundred twenty-two thousand".