121112121010 has 8 divisors (see below), whose sum is σ = 218001817836. Its totient is φ = 48444848400.

The previous prime is 121112121001. The next prime is 121112121029. The reversal of 121112121010 is 10121211121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 110740531729 + 10371589281 = 332777^2 + 101841^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6055606041 + ... + 6055606060.

Almost surely, 2^121112121010 is an apocalyptic number.

121112121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121112121010 is a deficient number, since it is larger than the sum of its proper divisors (96889696826).

121112121010 is a wasteful number, since it uses less digits than its factorization.

121112121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12111212108.

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

Adding to 121112121010 its reverse (10121211121), we get a palindrome (131233332131).

The spelling of 121112121010 in words is "one hundred twenty-one billion, one hundred twelve million, one hundred twenty-one thousand, ten".