2011437021 has 16 divisors (see below), whose sum is σ = 2926499328. Its totient is φ = 1218730800.

The previous prime is 2011437007. The next prime is 2011437053. The reversal of 2011437021 is 1207341102.

It is not a de Polignac number, because 2011437021 - 2⁵ = 2011436989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011432021) 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, 196000 + ... + 206006.

It is an arithmetic number, because the mean of its divisors is an integer number (182906208).

Almost surely, 2^2011437021 is an apocalyptic number.

It is an amenable number.

2011437021 is a deficient number, since it is larger than the sum of its proper divisors (915062307).

2011437021 is a wasteful number, since it uses less digits than its factorization.

2011437021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16112.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 2011437021 is about 44849.0470467322. The cubic root of 2011437021 is about 1262.3181103972.

Adding to 2011437021 its reverse (1207341102), we get a palindrome (3218778123).

The spelling of 2011437021 in words is "two billion, eleven million, four hundred thirty-seven thousand, twenty-one".