121022002000 has 80 divisors (see below), whose sum is σ = 298152805392. Its totient is φ = 47495385600.

The previous prime is 121022001973. The next prime is 121022002039. The reversal of 121022002000 is 200220121.

It can be written as a sum of positive squares in 8 ways, for example, as 39221425936 + 81800576064 = 198044^2 + 286008^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

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, 464859 + ... + 676858.

Almost surely, 2^121022002000 is an apocalyptic number.

121022002000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121022002000 is an abundant number, since it is smaller than the sum of its proper divisors (177130803392).

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

121022002000 is a wasteful number, since it uses less digits than its factorization.

121022002000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141793 (or 1141777 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 121022002000 its reverse (200220121), we get a palindrome (121222222121).

It can be divided in two parts, 12102 and 2002000, that added together give a palindrome (2014102).

The spelling of 121022002000 in words is "one hundred twenty-one billion, twenty-two million, two thousand".