1200021001098 has 16 divisors (see below), whose sum is σ = 2400061479840. Its totient is φ = 400003754096.

The previous prime is 1200021001061. The next prime is 1200021001099. The reversal of 1200021001098 is 8901001200021.

It is a super-2 number, since 2×1200021001098² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1200021001099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61636 + ... + 1550432.

It is an arithmetic number, because the mean of its divisors is an integer number (150003842490).

Almost surely, 2^{1200021001098} is an apocalyptic number.

1200021001098 is an abundant number, since it is smaller than the sum of its proper divisors (1200040478742).

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

1200021001098 is a wasteful number, since it uses less digits than its factorization.

1200021001098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623141.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 1200021001098 in words is "one trillion, two hundred billion, twenty-one million, one thousand, ninety-eight".