21355346642210 has 32 divisors (see below), whose sum is σ = 45841042236672. Its totient is φ = 7003492562880.

The previous prime is 21355346642137. The next prime is 21355346642239. The reversal of 21355346642210 is 1224664355312.

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, 6632093621 + ... + 6632096840.

It is an arithmetic number, because the mean of its divisors is an integer number (1432532569896).

Almost surely, 2^{21355346642210} is an apocalyptic number.

21355346642210 is an abundant number, since it is smaller than the sum of its proper divisors (24485695594462).

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

21355346642210 is a wasteful number, since it uses less digits than its factorization.

21355346642210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13264190498.

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 21355346642210 in words is "twenty-one trillion, three hundred fifty-five billion, three hundred forty-six million, six hundred forty-two thousand, two hundred ten".