121010221320000 has 560 divisors, whose sum is σ = 415300088831232. Its totient is φ = 31064970240000.

The previous prime is 121010221319993. The next prime is 121010221320019. The reversal of 121010221320000 is 23122010121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 343864134 + ... + 344215866.

Almost surely, 2^{121010221320000} is an apocalyptic number.

121010221320000 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 121010221320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207650044415616).

121010221320000 is an abundant number, since it is smaller than the sum of its proper divisors (294289867511232).

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

121010221320000 is an equidigital number, since it uses as much as digits as its factorization.

121010221320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351876 (or 351851 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 121010221320000 its reverse (23122010121), we get a palindrome (121033343330121).

The spelling of 121010221320000 in words is "one hundred twenty-one trillion, ten billion, two hundred twenty-one million, three hundred twenty thousand".