1021101121211 has 8 divisors (see below), whose sum is σ = 1023840694080. Its totient is φ = 1018361787912.

The previous prime is 1021101121199. The next prime is 1021101121219. The reversal of 1021101121211 is 1121211011201.

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-1021101121211 is a prime.

It is a super-2 number, since 2×1021101121211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021101121219) 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, 11402336 + ... + 11491538.

It is an arithmetic number, because the mean of its divisors is an integer number (127980086760).

Almost surely, 2^{1021101121211} is an apocalyptic number.

1021101121211 is a deficient number, since it is larger than the sum of its proper divisors (2739572869).

1021101121211 is an equidigital number, since it uses as much as digits as its factorization.

1021101121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119785.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1021101121211 its reverse (1121211011201), we get a palindrome (2142312132412).

The spelling of 1021101121211 in words is "one trillion, twenty-one billion, one hundred one million, one hundred twenty-one thousand, two hundred eleven".