2121853011 has 16 divisors (see below), whose sum is σ = 2999664000. Its totient is φ = 1329533568.

The previous prime is 2121852983. The next prime is 2121853043. The reversal of 2121853011 is 1103581212.

It is not a de Polignac number, because 2121853011 - 2¹⁹ = 2121328723 is a prime.

It is a super-2 number, since 2×2121853011² = 9004520400579532242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121854011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9540 + ... + 65838.

It is an arithmetic number, because the mean of its divisors is an integer number (187479000).

Almost surely, 2^2121853011 is an apocalyptic number.

2121853011 is a deficient number, since it is larger than the sum of its proper divisors (877810989).

2121853011 is a wasteful number, since it uses less digits than its factorization.

2121853011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57058.

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 2121853011 is about 46063.5757513461. The cubic root of 2121853011 is about 1285.0058311999.

The spelling of 2121853011 in words is "two billion, one hundred twenty-one million, eight hundred fifty-three thousand, eleven".