2021311098 has 20 divisors (see below), whose sum is σ = 4529234490. Its totient is φ = 673770312.

The previous prime is 2021311091. The next prime is 2021311099. The reversal of 2021311098 is 8901131202.

It can be written as a sum of positive squares in only one way, i.e., 2003189049 + 18122049 = 44757^2 + 4257^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2021311091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6238453 + ... + 6238776.

Almost surely, 2^2021311098 is an apocalyptic number.

2021311098 is an abundant number, since it is smaller than the sum of its proper divisors (2507923392).

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

2021311098 is a wasteful number, since it uses less digits than its factorization.

2021311098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12477243 (or 12477234 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 2021311098 is about 44958.9935163144. The cubic root of 2021311098 is about 1264.3802987800.

The spelling of 2021311098 in words is "two billion, twenty-one million, three hundred eleven thousand, ninety-eight".