1021122202021 has 8 divisors (see below), whose sum is σ = 1023062114880. Its totient is φ = 1019182737792.

The previous prime is 1021122202007. The next prime is 1021122202031. The reversal of 1021122202021 is 1202022211201.

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 1021122202021 - 2⁵ = 1021122201989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021122201986 and 1021122202004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021122202031) 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, 4634485 + ... + 4849813.

It is an arithmetic number, because the mean of its divisors is an integer number (127882764360).

Almost surely, 2^{1021122202021} is an apocalyptic number.

It is an amenable number.

1021122202021 is a deficient number, since it is larger than the sum of its proper divisors (1939912859).

1021122202021 is an equidigital number, since it uses as much as digits as its factorization.

1021122202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224315.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1021122202021 its reverse (1202022211201), we get a palindrome (2223144413222).

The spelling of 1021122202021 in words is "one trillion, twenty-one billion, one hundred twenty-two million, two hundred two thousand, twenty-one".