1212022201980 has 48 divisors (see below), whose sum is σ = 3401761668480. Its totient is φ = 322434539328.

The previous prime is 1212022201967. The next prime is 1212022201981. The reversal of 1212022201980 is 891022202121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212022201981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24080314 + ... + 24130593.

It is an arithmetic number, because the mean of its divisors is an integer number (70870034760).

Almost surely, 2^{1212022201980} is an apocalyptic number.

1212022201980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212022201980 is an abundant number, since it is smaller than the sum of its proper divisors (2189739466500).

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

1212022201980 is a wasteful number, since it uses less digits than its factorization.

1212022201980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48211338 (or 48211336 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The spelling of 1212022201980 in words is "one trillion, two hundred twelve billion, twenty-two million, two hundred one thousand, nine hundred eighty".