2021151114 has 96 divisors (see below), whose sum is σ = 4816927440. Its totient is φ = 609638400.

The previous prime is 2021151101. The next prime is 2021151127. The reversal of 2021151114 is 4111511202.

It is an interprime number because it is at equal distance from previous prime (2021151101) and next prime (2021151127).

It can be written as a sum of positive squares in 8 ways, for example, as 526014225 + 1495136889 = 22935^2 + 38667^2 .

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 47 ways as a sum of consecutive naturals, for example, 3735684 + ... + 3736224.

Almost surely, 2^2021151114 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021151114, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2408463720).

2021151114 is an abundant number, since it is smaller than the sum of its proper divisors (2795776326).

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

2021151114 is a wasteful number, since it uses less digits than its factorization.

2021151114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016 (or 1013 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 2021151114 is about 44957.2142597826. The cubic root of 2021151114 is about 1264.3469399113.

Adding to 2021151114 its reverse (4111511202), we get a palindrome (6132662316).

The spelling of 2021151114 in words is "two billion, twenty-one million, one hundred fifty-one thousand, one hundred fourteen".