1000551021210 has 128 divisors (see below), whose sum is σ = 2873894607360. Its totient is φ = 246245142528.

The previous prime is 1000551021209. The next prime is 1000551021257. The reversal of 1000551021210 is 121201550001.

1000551021210 is a `hidden beast` number, since 100 + 0 + 551 + 0 + 2 + 1 + 2 + 10 = 666.

It is a super-2 number, since 2×1000551021210² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22220379 + ... + 22265361.

It is an arithmetic number, because the mean of its divisors is an integer number (22452301620).

Almost surely, 2^{1000551021210} is an apocalyptic number.

1000551021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000551021210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1436947303680).

1000551021210 is an abundant number, since it is smaller than the sum of its proper divisors (1873343586150).

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

1000551021210 is a wasteful number, since it uses less digits than its factorization.

1000551021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51349 (or 51343 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

Adding to 1000551021210 its reverse (121201550001), we get a palindrome (1121752571211).

The spelling of 1000551021210 in words is "one trillion, five hundred fifty-one million, twenty-one thousand, two hundred ten".