1211301002131 has 8 divisors (see below), whose sum is σ = 1321655689728. Its totient is φ = 1100985717000.

The previous prime is 1211301002113. The next prime is 1211301002231. The reversal of 1211301002131 is 1312001031121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1211301002131 - 2⁹ = 1211301001619 is a prime.

It is a super-2 number, since 2×1211301002131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211301002101) 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, 9786315 + ... + 9909316.

It is an arithmetic number, because the mean of its divisors is an integer number (165206961216).

Almost surely, 2^{1211301002131} is an apocalyptic number.

1211301002131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1211301002131 is a deficient number, since it is larger than the sum of its proper divisors (110354687597).

1211301002131 is a wasteful number, since it uses less digits than its factorization.

1211301002131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19701233.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1211301002131 its reverse (1312001031121), we get a palindrome (2523302033252).

The spelling of 1211301002131 in words is "one trillion, two hundred eleven billion, three hundred one million, two thousand, one hundred thirty-one".