211021221110 has 32 divisors (see below), whose sum is σ = 434903280192. Its totient is φ = 72216385920.

The previous prime is 211021221101. The next prime is 211021221143. The reversal of 211021221110 is 11122120112.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 2748257 + ... + 2823996.

It is an arithmetic number, because the mean of its divisors is an integer number (13590727506).

Almost surely, 2^211021221110 is an apocalyptic number.

211021221110 is an abundant number, since it is smaller than the sum of its proper divisors (223882059082).

211021221110 is a wasteful number, since it uses less digits than its factorization.

211021221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5572808.

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

Adding to 211021221110 its reverse (11122120112), we get a palindrome (222143341222).

The spelling of 211021221110 in words is "two hundred eleven billion, twenty-one million, two hundred twenty-one thousand, one hundred ten".