121010011220 has 24 divisors (see below), whose sum is σ = 290424027264. Its totient is φ = 41489146656.

The previous prime is 121010011211. The next prime is 121010011231. The reversal of 121010011220 is 22110010121.

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, 432178472 + ... + 432178751.

It is an arithmetic number, because the mean of its divisors is an integer number (12101001136).

Almost surely, 2^121010011220 is an apocalyptic number.

121010011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121010011220 is an abundant number, since it is smaller than the sum of its proper divisors (169414016044).

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

121010011220 is a wasteful number, since it uses less digits than its factorization.

121010011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864357239 (or 864357237 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121010011220 its reverse (22110010121), we get a palindrome (143120021341).

The spelling of 121010011220 in words is "one hundred twenty-one billion, ten million, eleven thousand, two hundred twenty".