1212011100103 has 8 divisors (see below), whose sum is σ = 1221706137600. Its totient is φ = 1202318432280.

The previous prime is 1212011100067. The next prime is 1212011100109. The reversal of 1212011100103 is 3010011102121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1212011100103 - 2³⁷ = 1074572146631 is a prime.

It is a super-2 number, since 2×1212011100103² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212011100109) 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, 441798 + ... + 1618396.

It is an arithmetic number, because the mean of its divisors is an integer number (152713267200).

Almost surely, 2^{1212011100103} is an apocalyptic number.

1212011100103 is a deficient number, since it is larger than the sum of its proper divisors (9695037497).

1212011100103 is a wasteful number, since it uses less digits than its factorization.

1212011100103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184837.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1212011100103 its reverse (3010011102121), we get a palindrome (4222022202224).

The spelling of 1212011100103 in words is "one trillion, two hundred twelve billion, eleven million, one hundred thousand, one hundred three".