1021101210231 has 4 divisors (see below), whose sum is σ = 1361468280312. Its totient is φ = 680734140152.

The previous prime is 1021101210229. The next prime is 1021101210251. The reversal of 1021101210231 is 1320121011201.

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

It is a cyclic number.

It is not a de Polignac number, because 1021101210231 - 2¹ = 1021101210229 is a prime.

It is a super-2 number, since 2×1021101210231² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1021101210231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021101210251) 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, 170183535036 + ... + 170183535041.

It is an arithmetic number, because the mean of its divisors is an integer number (340367070078).

Almost surely, 2^{1021101210231} is an apocalyptic number.

1021101210231 is a deficient number, since it is larger than the sum of its proper divisors (340367070081).

1021101210231 is an equidigital number, since it uses as much as digits as its factorization.

1021101210231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340367070080.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1021101210231 its reverse (1320121011201), we get a palindrome (2341222221432).

The spelling of 1021101210231 in words is "one trillion, twenty-one billion, one hundred one million, two hundred ten thousand, two hundred thirty-one".