1212111112010 has 8 divisors (see below), whose sum is σ = 2181800001636. Its totient is φ = 484844444800.

The previous prime is 1212111111983. The next prime is 1212111112021. The reversal of 1212111112010 is 102111112121.

It can be written as a sum of positive squares in 2 ways, for example, as 1179671860129 + 32439251881 = 1086127^2 + 180109^2 .

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, 60605555591 + ... + 60605555610.

Almost surely, 2^{1212111112010} is an apocalyptic number.

1212111112010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212111112010 is a deficient number, since it is larger than the sum of its proper divisors (969688889626).

1212111112010 is a wasteful number, since it uses less digits than its factorization.

1212111112010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121211111208.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1212111112010 its reverse (102111112121), we get a palindrome (1314222224131).

It can be divided in two parts, 12121111 and 12010, that added together give a palindrome (12133121).

The spelling of 1212111112010 in words is "one trillion, two hundred twelve billion, one hundred eleven million, one hundred twelve thousand, ten".