120001223220 has 24 divisors (see below), whose sum is σ = 336003425184. Its totient is φ = 32000326176.

The previous prime is 120001223191. The next prime is 120001223257. The reversal of 120001223220 is 22322100021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 120001223220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000010134 + ... + 1000010253.

It is an arithmetic number, because the mean of its divisors is an integer number (14000142716).

Almost surely, 2^120001223220 is an apocalyptic number.

120001223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120001223220 is an abundant number, since it is smaller than the sum of its proper divisors (216002201964).

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

120001223220 is a wasteful number, since it uses less digits than its factorization.

120001223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000020399 (or 2000020397 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 120001223220 its reverse (22322100021), we get a palindrome (142323323241).

The spelling of 120001223220 in words is "one hundred twenty billion, one million, two hundred twenty-three thousand, two hundred twenty".