1211100132029 has 4 divisors (see below), whose sum is σ = 1282341316284. Its totient is φ = 1139858947776.

The previous prime is 1211100131999. The next prime is 1211100132041. The reversal of 1211100132029 is 9202310011121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 972438571129 + 238661560900 = 986123^2 + 488530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211100132029 is a prime.

It is a super-3 number, since 3×1211100132029³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211100131995 and 1211100132013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211100132089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35620592102 + ... + 35620592135.

It is an arithmetic number, because the mean of its divisors is an integer number (320585329071).

Almost surely, 2^{1211100132029} is an apocalyptic number.

It is an amenable number.

1211100132029 is a deficient number, since it is larger than the sum of its proper divisors (71241184255).

1211100132029 is an equidigital number, since it uses as much as digits as its factorization.

1211100132029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71241184254.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 1211100132029 in words is "one trillion, two hundred eleven billion, one hundred million, one hundred thirty-two thousand, twenty-nine".