1021131020111 has 8 divisors (see below), whose sum is σ = 1025702078544. Its totient is φ = 1016561573440.

The previous prime is 1021131020083. The next prime is 1021131020201. The reversal of 1021131020111 is 1110201311201.

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 1021131020111 - 2²⁶ = 1021063911247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021131020411) 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, 876056 + ... + 1676226.

It is an arithmetic number, because the mean of its divisors is an integer number (128212759818).

Almost surely, 2^{1021131020111} is an apocalyptic number.

1021131020111 is a deficient number, since it is larger than the sum of its proper divisors (4571058433).

1021131020111 is an equidigital number, since it uses as much as digits as its factorization.

1021131020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805881.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 1021131020111 its reverse (1110201311201), we get a palindrome (2131332331312).

The spelling of 1021131020111 in words is "one trillion, twenty-one billion, one hundred thirty-one million, twenty thousand, one hundred eleven".