121219102780 has 96 divisors (see below), whose sum is σ = 260905881600. Its totient is φ = 47295705600.

The previous prime is 121219102759. The next prime is 121219102813. The reversal of 121219102780 is 87201912121.

121219102780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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, 62130805 + ... + 62132755.

It is an arithmetic number, because the mean of its divisors is an integer number (2717769600).

Almost surely, 2^121219102780 is an apocalyptic number.

121219102780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121219102780 is an abundant number, since it is smaller than the sum of its proper divisors (139686778820).

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

121219102780 is a wasteful number, since it uses less digits than its factorization.

121219102780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459 (or 2457 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 34.

The spelling of 121219102780 in words is "one hundred twenty-one billion, two hundred nineteen million, one hundred two thousand, seven hundred eighty".