121112211010 has 16 divisors (see below), whose sum is σ = 249145119936. Its totient is φ = 41524186608.

The previous prime is 121112210993. The next prime is 121112211013. The reversal of 121112211010 is 10112211121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121112211013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865087152 + ... + 865087291.

It is an arithmetic number, because the mean of its divisors is an integer number (15571569996).

Almost surely, 2^121112211010 is an apocalyptic number.

121112211010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121112211010 is an abundant number, since it is smaller than the sum of its proper divisors (128032908926).

121112211010 is a wasteful number, since it uses less digits than its factorization.

121112211010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730174457.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121112211010 its reverse (10112211121), we get a palindrome (131224422131).

The spelling of 121112211010 in words is "one hundred twenty-one billion, one hundred twelve million, two hundred eleven thousand, ten".