1021002220111 has 8 divisors (see below), whose sum is σ = 1044815739264. Its totient is φ = 997191850200.

The previous prime is 1021002220109. The next prime is 1021002220123. The reversal of 1021002220111 is 1110222001201.

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 1021002220111 - 2¹ = 1021002220109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021002220091 and 1021002220100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021002220211) 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, 124915 + ... + 1434436.

It is an arithmetic number, because the mean of its divisors is an integer number (130601967408).

Almost surely, 2^{1021002220111} is an apocalyptic number.

1021002220111 is a deficient number, since it is larger than the sum of its proper divisors (23813519153).

1021002220111 is a wasteful number, since it uses less digits than its factorization.

1021002220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574621.

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

Adding to 1021002220111 its reverse (1110222001201), we get a palindrome (2131224221312).

The spelling of 1021002220111 in words is "one trillion, twenty-one billion, two million, two hundred twenty thousand, one hundred eleven".