121000202212220 has 48 divisors (see below), whose sum is σ = 283207903644960. Its totient is φ = 43155490074624.

The previous prime is 121000202212217. The next prime is 121000202212243. The reversal of 121000202212220 is 22212202000121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9365334269 + ... + 9365347188.

It is an arithmetic number, because the mean of its divisors is an integer number (5900164659270).

Almost surely, 2^{121000202212220} is an apocalyptic number.

121000202212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121000202212220 is an abundant number, since it is smaller than the sum of its proper divisors (162207701432740).

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

121000202212220 is a wasteful number, since it uses less digits than its factorization.

121000202212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18730681502 (or 18730681500 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121000202212220 its reverse (22212202000121), we get a palindrome (143212404212341).

The spelling of 121000202212220 in words is "one hundred twenty-one trillion, two hundred two million, two hundred twelve thousand, two hundred twenty".