1020120212021 has 8 divisors (see below), whose sum is σ = 1052978306688. Its totient is φ = 987641980000.

The previous prime is 1020120211997. The next prime is 1020120212039. The reversal of 1020120212021 is 1202120210201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020120212021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1020120211987 and 1020120212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020120212821) 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, 94960205 + ... + 94970946.

It is an arithmetic number, because the mean of its divisors is an integer number (131622288336).

Almost surely, 2^{1020120212021} is an apocalyptic number.

It is an amenable number.

1020120212021 is a deficient number, since it is larger than the sum of its proper divisors (32858094667).

1020120212021 is a wasteful number, since it uses less digits than its factorization.

1020120212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189931323.

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

Adding to 1020120212021 its reverse (1202120210201), we get a palindrome (2222240422222).

The spelling of 1020120212021 in words is "one trillion, twenty billion, one hundred twenty million, two hundred twelve thousand, twenty-one".