1235545212101 has 8 divisors (see below), whose sum is σ = 1240306277784. Its totient is φ = 1230787848960.

The previous prime is 1235545212071. The next prime is 1235545212203. The reversal of 1235545212101 is 1012125455321.

It can be written as a sum of positive squares in 4 ways, for example, as 555248522500 + 680296689601 = 745150^2 + 824801^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1235545212101 is a prime.

It is a super-2 number, since 2×1235545212101² (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 (1235545211101) 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, 256016 + ... + 1592681.

It is an arithmetic number, because the mean of its divisors is an integer number (155038284723).

Almost surely, 2^{1235545212101} is an apocalyptic number.

It is an amenable number.

1235545212101 is a deficient number, since it is larger than the sum of its proper divisors (4761065683).

1235545212101 is a wasteful number, since it uses less digits than its factorization.

1235545212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851271.

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 1235545212101 in words is "one trillion, two hundred thirty-five billion, five hundred forty-five million, two hundred twelve thousand, one hundred one".