1021011220200 has 48 divisors (see below), whose sum is σ = 3165134784480. Its totient is φ = 272269658560.

The previous prime is 1021011220169. The next prime is 1021011220241. The reversal of 1021011220200 is 20221101201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 850842084 + ... + 850843283.

It is an arithmetic number, because the mean of its divisors is an integer number (65940308010).

Almost surely, 2^{1021011220200} is an apocalyptic number.

1021011220200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021011220200 is an abundant number, since it is smaller than the sum of its proper divisors (2144123564280).

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

1021011220200 is a wasteful number, since it uses less digits than its factorization.

1021011220200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701685386 (or 1701685377 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1021011220200 its reverse (20221101201), we get a palindrome (1041232321401).

The spelling of 1021011220200 in words is "one trillion, twenty-one billion, eleven million, two hundred twenty thousand, two hundred".