121202212020 has 96 divisors (see below), whose sum is σ = 354446064000. Its totient is φ = 30914025984.

The previous prime is 121202211997. The next prime is 121202212031. The reversal of 121202212020 is 20212202121.

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 31 ways as a sum of consecutive naturals, for example, 331695 + ... + 593654.

It is an arithmetic number, because the mean of its divisors is an integer number (3692146500).

Almost surely, 2^121202212020 is an apocalyptic number.

121202212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202212020 is an abundant number, since it is smaller than the sum of its proper divisors (233243851980).

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

121202212020 is a wasteful number, since it uses less digits than its factorization.

121202212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925457 (or 925455 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 121202212020 its reverse (20212202121), we get a palindrome (141414414141).

The spelling of 121202212020 in words is "one hundred twenty-one billion, two hundred two million, two hundred twelve thousand, twenty".