1201122123100 has 36 divisors (see below), whose sum is σ = 2633305492384. Its totient is φ = 475495764480.

The previous prime is 1201122123041. The next prime is 1201122123107. The reversal of 1201122123100 is 13212211021.

It is a super-2 number, since 2×1201122123100² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201122123107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61903812 + ... + 61923211.

Almost surely, 2^{1201122123100} is an apocalyptic number.

1201122123100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201122123100 is an abundant number, since it is smaller than the sum of its proper divisors (1432183369284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201122123100 is a wasteful number, since it uses less digits than its factorization.

1201122123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123827134 (or 123827127 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1201122123100 its reverse (13212211021), we get a palindrome (1214334334121).

The spelling of 1201122123100 in words is "one trillion, two hundred one billion, one hundred twenty-two million, one hundred twenty-three thousand, one hundred".