1000120220988 has 48 divisors (see below), whose sum is σ = 2758952340480. Its totient is φ = 275895232704.

The previous prime is 1000120220909. The next prime is 1000120221019. The reversal of 1000120220988 is 8890220210001.

It is a super-2 number, since 2×1000120220988² (a number of 25 digits) contains 22 as substring.

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, 205276756 + ... + 205281627.

It is an arithmetic number, because the mean of its divisors is an integer number (57478173760).

Almost surely, 2^{1000120220988} is an apocalyptic number.

It is an amenable number.

1000120220988 is an abundant number, since it is smaller than the sum of its proper divisors (1758832119492).

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

1000120220988 is a wasteful number, since it uses less digits than its factorization.

1000120220988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410558426 (or 410558424 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

Adding to 1000120220988 its reverse (8890220210001), we get a palindrome (9890340430989).

The spelling of 1000120220988 in words is "one trillion, one hundred twenty million, two hundred twenty thousand, nine hundred eighty-eight".