1212100101010 has 16 divisors (see below), whose sum is σ = 2204272762776. Its totient is φ = 479841689088.

The previous prime is 1212100101001. The next prime is 1212100101019. The reversal of 1212100101010 is 101010012121.

It is an interprime number because it is at equal distance from previous prime (1212100101001) and next prime (1212100101019).

It can be written as a sum of positive squares in 4 ways, for example, as 785334488481 + 426765612529 = 886191^2 + 653273^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (1212100101019) 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, 624792897 + ... + 624794836.

Almost surely, 2^{1212100101010} is an apocalyptic number.

1212100101010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212100101010 is a deficient number, since it is larger than the sum of its proper divisors (992172661766).

1212100101010 is a wasteful number, since it uses less digits than its factorization.

1212100101010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249587837.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1212100101010 its reverse (101010012121), we get a palindrome (1313110113131).

The spelling of 1212100101010 in words is "one trillion, two hundred twelve billion, one hundred million, one hundred one thousand, ten".