1201230101123 has 16 divisors (see below), whose sum is σ = 1350093116736. Its totient is φ = 1060448315520.

The previous prime is 1201230101083. The next prime is 1201230101161. The reversal of 1201230101123 is 3211010321021.

It is a cyclic number.

It is not a de Polignac number, because 1201230101123 - 2⁸ = 1201230100867 is a prime.

It is a super-2 number, since 2×1201230101123² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1201230101023) 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, 1570793 + ... + 2206773.

It is an arithmetic number, because the mean of its divisors is an integer number (84380819796).

Almost surely, 2^{1201230101123} is an apocalyptic number.

1201230101123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1201230101123 is a deficient number, since it is larger than the sum of its proper divisors (148863015613).

1201230101123 is a wasteful number, since it uses less digits than its factorization.

1201230101123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642334.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1201230101123 its reverse (3211010321021), we get a palindrome (4412240422144).

The spelling of 1201230101123 in words is "one trillion, two hundred one billion, two hundred thirty million, one hundred one thousand, one hundred twenty-three".