121212022000 has 80 divisors (see below), whose sum is σ = 293166986112. Its totient is φ = 48472185600.

The previous prime is 121212021989. The next prime is 121212022003. The reversal of 121212022000 is 220212121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212022003) 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, 13209414 + ... + 13218586.

Almost surely, 2^121212022000 is an apocalyptic number.

121212022000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121212022000 is an abundant number, since it is smaller than the sum of its proper divisors (171954964112).

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

121212022000 is an equidigital number, since it uses as much as digits as its factorization.

121212022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15803 (or 15787 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 121212022000 its reverse (220212121), we get a palindrome (121432234121).

The spelling of 121212022000 in words is "one hundred twenty-one billion, two hundred twelve million, twenty-two thousand".