21035542200510 has 32 divisors (see below), whose sum is σ = 50485449464352. Its totient is φ = 5609461455360.

The previous prime is 21035542200481. The next prime is 21035542200529. The reversal of 21035542200510 is 1500224553012.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12114042 + ... + 13741218.

It is an arithmetic number, because the mean of its divisors is an integer number (1577670295761).

Almost surely, 2^{21035542200510} is an apocalyptic number.

21035542200510 is an abundant number, since it is smaller than the sum of its proper divisors (29449907263842).

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

21035542200510 is a wasteful number, since it uses less digits than its factorization.

21035542200510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058108.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 21035542200510 its reverse (1500224553012), we get a palindrome (22535766753522).

The spelling of 21035542200510 in words is "twenty-one trillion, thirty-five billion, five hundred forty-two million, two hundred thousand, five hundred ten".