1020111021211 has 8 divisors (see below), whose sum is σ = 1042172804160. Its totient is φ = 998064125568.

The previous prime is 1020111021199. The next prime is 1020111021239. The reversal of 1020111021211 is 1121201110201.

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 1020111021211 - 2²³ = 1020102632603 is a prime.

It is a super-2 number, since 2×1020111021211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020111021191 and 1020111021200.

It is not an unprimeable number, because it can be changed into a prime (1020111022211) 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, 3583246 + ... + 3857443.

It is an arithmetic number, because the mean of its divisors is an integer number (130271600520).

Almost surely, 2^{1020111021211} is an apocalyptic number.

1020111021211 is a deficient number, since it is larger than the sum of its proper divisors (22061782949).

1020111021211 is an equidigital number, since it uses as much as digits as its factorization.

1020111021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7443653.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1020111021211 its reverse (1121201110201), we get a palindrome (2141312131412).

The spelling of 1020111021211 in words is "one trillion, twenty billion, one hundred eleven million, twenty-one thousand, two hundred eleven".