21002222211110 has 128 divisors (see below), whose sum is σ = 43491803758848. Its totient is φ = 7153090560000.

The previous prime is 21002222211109. The next prime is 21002222211193. The reversal of 21002222211110 is 1111222220012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15898729250 + ... + 15898730570.

It is an arithmetic number, because the mean of its divisors is an integer number (339779716866).

Almost surely, 2^{21002222211110} is an apocalyptic number.

21002222211110 is an abundant number, since it is smaller than the sum of its proper divisors (22489581547738).

21002222211110 is a wasteful number, since it uses less digits than its factorization.

21002222211110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3490.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21002222211110 its reverse (1111222220012), we get a palindrome (22113444431122).

The spelling of 21002222211110 in words is "twenty-one trillion, two billion, two hundred twenty-two million, two hundred eleven thousand, one hundred ten".