1021212340131 has 8 divisors (see below), whose sum is σ = 1364532122304. Its totient is φ = 679350392360.

The previous prime is 1021212340117. The next prime is 1021212340139. The reversal of 1021212340131 is 1310432121201.

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-1021212340131 is a prime.

It is a super-2 number, since 2×1021212340131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021212340098 and 1021212340107.

It is not an unprimeable number, because it can be changed into a prime (1021212340139) 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, 364456965 + ... + 364459766.

It is an arithmetic number, because the mean of its divisors is an integer number (170566515288).

Almost surely, 2^{1021212340131} is an apocalyptic number.

1021212340131 is a deficient number, since it is larger than the sum of its proper divisors (343319782173).

1021212340131 is an equidigital number, since it uses as much as digits as its factorization.

1021212340131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728917201.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1021212340131 its reverse (1310432121201), we get a palindrome (2331644461332).

The spelling of 1021212340131 in words is "one trillion, twenty-one billion, two hundred twelve million, three hundred forty thousand, one hundred thirty-one".