1020021120121 has 8 divisors (see below), whose sum is σ = 1022563163360. Its totient is φ = 1017479312352.

The previous prime is 1020021120091. The next prime is 1020021120199. The reversal of 1020021120121 is 1210211200201.

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 1020021120121 - 2¹³ = 1020021111929 is a prime.

It is a super-2 number, since 2×1020021120121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020021120421) 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, 11359426 + ... + 11448868.

It is an arithmetic number, because the mean of its divisors is an integer number (127820395420).

Almost surely, 2^{1020021120121} is an apocalyptic number.

It is an amenable number.

1020021120121 is a deficient number, since it is larger than the sum of its proper divisors (2542043239).

1020021120121 is an equidigital number, since it uses as much as digits as its factorization.

1020021120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117735.

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

Adding to 1020021120121 its reverse (1210211200201), we get a palindrome (2230232320322).

The spelling of 1020021120121 in words is "one trillion, twenty billion, twenty-one million, one hundred twenty thousand, one hundred twenty-one".