1200001022110 has 64 divisors (see below), whose sum is σ = 2449870272000. Its totient is φ = 419199580800.

The previous prime is 1200001022057. The next prime is 1200001022113. The reversal of 1200001022110 is 112201000021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200001022113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 310356 + ... + 1579975.

It is an arithmetic number, because the mean of its divisors is an integer number (38279223000).

Almost surely, 2^{1200001022110} is an apocalyptic number.

1200001022110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200001022110 is an abundant number, since it is smaller than the sum of its proper divisors (1249869249890).

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

1200001022110 is a wasteful number, since it uses less digits than its factorization.

1200001022110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890577.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1200001022110 its reverse (112201000021), we get a palindrome (1312202022131).

The spelling of 1200001022110 in words is "one trillion, two hundred billion, one million, twenty-two thousand, one hundred ten".