21002021211110 has 32 divisors (see below), whose sum is σ = 38608349110272. Its totient is φ = 8221987335520.

The previous prime is 21002021211019. The next prime is 21002021211131. The reversal of 21002021211110 is 1111212020012.

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, 76069415 + ... + 76345005.

It is an arithmetic number, because the mean of its divisors is an integer number (1206510909696).

Almost surely, 2^{21002021211110} is an apocalyptic number.

21002021211110 is a deficient number, since it is larger than the sum of its proper divisors (17606327899162).

21002021211110 is a wasteful number, since it uses less digits than its factorization.

21002021211110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437788.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21002021211110 its reverse (1111212020012), we get a palindrome (22113233231122).

The spelling of 21002021211110 in words is "twenty-one trillion, two billion, twenty-one million, two hundred eleven thousand, one hundred ten".