1021202020111 has 8 divisors (see below), whose sum is σ = 1256864024864. Its totient is φ = 807984015840.

The previous prime is 1021202020099. The next prime is 1021202020183. The reversal of 1021202020111 is 1110202021201.

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 1021202020111 - 2⁹ = 1021202019599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1021202020091 and 1021202020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021202020511) 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, 5611000020 + ... + 5611000201.

It is an arithmetic number, because the mean of its divisors is an integer number (157108003108).

Almost surely, 2^{1021202020111} is an apocalyptic number.

1021202020111 is a deficient number, since it is larger than the sum of its proper divisors (235662004753).

1021202020111 is a wasteful number, since it uses less digits than its factorization.

1021202020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11222000241.

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

Adding to 1021202020111 its reverse (1110202021201), we get a palindrome (2131404041312).

The spelling of 1021202020111 in words is "one trillion, twenty-one billion, two hundred two million, twenty thousand, one hundred eleven".