123212045101 has 16 divisors (see below), whose sum is σ = 133244397760. Its totient is φ = 113536442880.

The previous prime is 123212045083. The next prime is 123212045113. The reversal of 123212045101 is 101540212321.

It is a cyclic number.

It is not a de Polignac number, because 123212045101 - 2¹⁷ = 123211914029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123212049101) 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, 2336710 + ... + 2388856.

It is an arithmetic number, because the mean of its divisors is an integer number (8327774860).

Almost surely, 2^123212045101 is an apocalyptic number.

It is an amenable number.

123212045101 is a deficient number, since it is larger than the sum of its proper divisors (10032352659).

123212045101 is a wasteful number, since it uses less digits than its factorization.

123212045101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55564.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 123212045101 its reverse (101540212321), we get a palindrome (224752257422).

The spelling of 123212045101 in words is "one hundred twenty-three billion, two hundred twelve million, forty-five thousand, one hundred one".