21010211110 has 32 divisors (see below), whose sum is σ = 43236067392. Its totient is φ = 7200990720.

The previous prime is 21010211083. The next prime is 21010211137. The reversal of 21010211110 is 1111201012.

It is an interprime number because it is at equal distance from previous prime (21010211083) and next prime (21010211137).

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 155890 + ... + 257530.

It is an arithmetic number, because the mean of its divisors is an integer number (1351127106).

Almost surely, 2^21010211110 is an apocalyptic number.

21010211110 is an abundant number, since it is smaller than the sum of its proper divisors (22225856282).

21010211110 is a wasteful number, since it uses less digits than its factorization.

21010211110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104608.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21010211110 its reverse (1111201012), we get a palindrome (22121412122).

The spelling of 21010211110 in words is "twenty-one billion, ten million, two hundred eleven thousand, one hundred ten".