121120202221000 has 64 divisors (see below), whose sum is σ = 283425344542080. Its totient is φ = 48447384932800.

The previous prime is 121120202220991. The next prime is 121120202221009. The reversal of 121120202221000 is 122202021121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121120202220991) and next prime (121120202221009).

It is not an unprimeable number, because it can be changed into a prime (121120202221009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71813379 + ... + 73480621.

It is an arithmetic number, because the mean of its divisors is an integer number (4428521008470).

Almost surely, 2^{121120202221000} is an apocalyptic number.

121120202221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121120202221000 is an abundant number, since it is smaller than the sum of its proper divisors (162305142321080).

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

121120202221000 is a wasteful number, since it uses less digits than its factorization.

121120202221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739911 (or 1739897 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121120202221000 its reverse (122202021121), we get a palindrome (121242404242121).

The spelling of 121120202221000 in words is "one hundred twenty-one trillion, one hundred twenty billion, two hundred two million, two hundred twenty-one thousand".