1020120021202 has 4 divisors (see below), whose sum is σ = 1530180031806. Its totient is φ = 510060010600.

The previous prime is 1020120021199. The next prime is 1020120021247. The reversal of 1020120021202 is 2021200210201.

It is a happy number.

1020120021202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 673894869921 + 346225151281 = 820911^2 + 588409^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255030005299 + ... + 255030005302.

Almost surely, 2^{1020120021202} is an apocalyptic number.

1020120021202 is a deficient number, since it is larger than the sum of its proper divisors (510060010604).

1020120021202 is an equidigital number, since it uses as much as digits as its factorization.

1020120021202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510060010603.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1020120021202 its reverse (2021200210201), we get a palindrome (3041320231403).

The spelling of 1020120021202 in words is "one trillion, twenty billion, one hundred twenty million, twenty-one thousand, two hundred two".