211220100010 has 16 divisors (see below), whose sum is σ = 380201500800. Its totient is φ = 84486857616.

The previous prime is 211220099989. The next prime is 211220100031. The reversal of 211220100010 is 10001022112.

It is an interprime number because it is at equal distance from previous prime (211220099989) and next prime (211220100031).

It is a super-2 number, since 2×211220100010² (a number of 23 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 211220100010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1121851 + ... + 1296529.

It is an arithmetic number, because the mean of its divisors is an integer number (23762593800).

Almost surely, 2^211220100010 is an apocalyptic number.

211220100010 is a deficient number, since it is larger than the sum of its proper divisors (168981400790).

211220100010 is a wasteful number, since it uses less digits than its factorization.

211220100010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295605.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 211220100010 its reverse (10001022112), we get a palindrome (221221122122).

The spelling of 211220100010 in words is "two hundred eleven billion, two hundred twenty million, one hundred thousand, ten".