1201220122000 has 160 divisors (see below), whose sum is σ = 2943522316800. Its totient is φ = 474050304000.

The previous prime is 1201220121991. The next prime is 1201220122013. The reversal of 1201220122000 is 2210221021.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 336380215 + ... + 336383785.

It is an arithmetic number, because the mean of its divisors is an integer number (18397014480).

Almost surely, 2^{1201220122000} is an apocalyptic number.

1201220122000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201220122000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1471761158400).

1201220122000 is an abundant number, since it is smaller than the sum of its proper divisors (1742302194800).

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

1201220122000 is a wasteful number, since it uses less digits than its factorization.

1201220122000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5802 (or 5786 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1201220122000 its reverse (2210221021), we get a palindrome (1203430343021).

The spelling of 1201220122000 in words is "one trillion, two hundred one billion, two hundred twenty million, one hundred twenty-two thousand".