120101221000 has 64 divisors (see below), whose sum is σ = 283819638960. Its totient is φ = 47564800000.

The previous prime is 120101220983. The next prime is 120101221027. The reversal of 120101221000 is 122101021.

It can be written as a sum of positive squares in 8 ways, for example, as 5262922116 + 114838298884 = 72546^2 + 338878^2 .

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

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, 493561 + ... + 695560.

Almost surely, 2^120101221000 is an apocalyptic number.

120101221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120101221000 is an abundant number, since it is smaller than the sum of its proper divisors (163718417960).

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

120101221000 is a wasteful number, since it uses less digits than its factorization.

120101221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189243 (or 1189229 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 120101221000 its reverse (122101021), we get a palindrome (120223322021).

The spelling of 120101221000 in words is "one hundred twenty billion, one hundred one million, two hundred twenty-one thousand".