1212000120123 has 16 divisors (see below), whose sum is σ = 1740435468576. Its totient is φ = 745791540480.

The previous prime is 1212000120119. The next prime is 1212000120127. The reversal of 1212000120123 is 3210210002121.

It is an interprime number because it is at equal distance from previous prime (1212000120119) and next prime (1212000120127).

It is not a de Polignac number, because 1212000120123 - 2² = 1212000120119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212000120127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 597340 + ... + 1667577.

It is an arithmetic number, because the mean of its divisors is an integer number (108777216786).

Almost surely, 2^{1212000120123} is an apocalyptic number.

1212000120123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1212000120123 is a deficient number, since it is larger than the sum of its proper divisors (528435348453).

1212000120123 is a wasteful number, since it uses less digits than its factorization.

1212000120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278654.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1212000120123 its reverse (3210210002121), we get a palindrome (4422210122244).

The spelling of 1212000120123 in words is "one trillion, two hundred twelve billion, one hundred twenty thousand, one hundred twenty-three".