21001022211110 has 16 divisors (see below), whose sum is σ = 37802133194400. Its totient is φ = 8400343725696.

The previous prime is 21001022211109. The next prime is 21001022211119. The reversal of 21001022211110 is 1111222010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001022211119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6780275 + ... + 9379454.

It is an arithmetic number, because the mean of its divisors is an integer number (2362633324650).

Almost surely, 2^{21001022211110} is an apocalyptic number.

21001022211110 is a deficient number, since it is larger than the sum of its proper divisors (16801110983290).

21001022211110 is a wasteful number, since it uses less digits than its factorization.

21001022211110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16289695.

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

Adding to 21001022211110 its reverse (1111222010012), we get a palindrome (22112244221122).

The spelling of 21001022211110 in words is "twenty-one trillion, one billion, twenty-two million, two hundred eleven thousand, one hundred ten".