1020120022111 has 8 divisors (see below), whose sum is σ = 1056406385664. Its totient is φ = 984464725920.

The previous prime is 1020120022069. The next prime is 1020120022147. The reversal of 1020120022111 is 1112200210201.

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 1020120022111 - 2³¹ = 1017972538463 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020120022091 and 1020120022100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020120022211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157763551 + ... + 157770016.

It is an arithmetic number, because the mean of its divisors is an integer number (132050798208).

Almost surely, 2^{1020120022111} is an apocalyptic number.

1020120022111 is a deficient number, since it is larger than the sum of its proper divisors (36286363553).

1020120022111 is an equidigital number, since it uses as much as digits as its factorization.

1020120022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315533681.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1020120022111 its reverse (1112200210201), we get a palindrome (2132320232312).

The spelling of 1020120022111 in words is "one trillion, twenty billion, one hundred twenty million, twenty-two thousand, one hundred eleven".