1021022002121 has 8 divisors (see below), whose sum is σ = 1114347813024. Its totient is φ = 927780462720.

The previous prime is 1021022002087. The next prime is 1021022002153. The reversal of 1021022002121 is 1212002201201.

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 1021022002121 - 2³⁰ = 1019948260297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021022002096 and 1021022002105.

It is not an unprimeable number, because it can be changed into a prime (1021022002181) 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, 21042536 + ... + 21091001.

It is an arithmetic number, because the mean of its divisors is an integer number (139293476628).

Almost surely, 2^{1021022002121} is an apocalyptic number.

1021022002121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1021022002121 is a deficient number, since it is larger than the sum of its proper divisors (93325810903).

1021022002121 is a wasteful number, since it uses less digits than its factorization.

1021022002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42135751.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1021022002121 its reverse (1212002201201), we get a palindrome (2233024203322).

The spelling of 1021022002121 in words is "one trillion, twenty-one billion, twenty-two million, two thousand, one hundred twenty-one".