211112222121010 has 64 divisors (see below), whose sum is σ = 443532799153152. Its totient is φ = 70840565554176.

The previous prime is 211112222121001. The next prime is 211112222121077. The reversal of 211112222121010 is 10121222211112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380879434 + ... + 381433306.

It is an arithmetic number, because the mean of its divisors is an integer number (6930199986768).

Almost surely, 2^{211112222121010} is an apocalyptic number.

211112222121010 is an abundant number, since it is smaller than the sum of its proper divisors (232420577032142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211112222121010 is a wasteful number, since it uses less digits than its factorization.

211112222121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669787.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211112222121010 its reverse (10121222211112), we get a palindrome (221233444332122).

The spelling of 211112222121010 in words is "two hundred eleven trillion, one hundred twelve billion, two hundred twenty-two million, one hundred twenty-one thousand, ten".