21052015011134 has 8 divisors (see below), whose sum is σ = 31580571018288. Its totient is φ = 10525158005040.

The previous prime is 21052015011127. The next prime is 21052015011149. The reversal of 21052015011134 is 43111051025012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21052015011134² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424719287 + ... + 424768850.

It is an arithmetic number, because the mean of its divisors is an integer number (3947571377286).

Almost surely, 2^{21052015011134} is an apocalyptic number.

21052015011134 is a deficient number, since it is larger than the sum of its proper divisors (10528556007154).

21052015011134 is a wasteful number, since it uses less digits than its factorization.

21052015011134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849500530.

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 21052015011134 its reverse (43111051025012), we get a palindrome (64163066036146).

The spelling of 21052015011134 in words is "twenty-one trillion, fifty-two billion, fifteen million, eleven thousand, one hundred thirty-four".