1020212010221 has 4 divisors (see below), whose sum is σ = 1073907379200. Its totient is φ = 966516641244.

The previous prime is 1020212010187. The next prime is 1020212010227. The reversal of 1020212010221 is 1220102120201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1020212010221 - 2⁶ = 1020212010157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020212010196 and 1020212010205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020212010227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26847684461 + ... + 26847684498.

It is an arithmetic number, because the mean of its divisors is an integer number (268476844800).

Almost surely, 2^{1020212010221} is an apocalyptic number.

It is an amenable number.

1020212010221 is a deficient number, since it is larger than the sum of its proper divisors (53695368979).

1020212010221 is an equidigital number, since it uses as much as digits as its factorization.

1020212010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53695368978.

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

Adding to 1020212010221 its reverse (1220102120201), we get a palindrome (2240314130422).

The spelling of 1020212010221 in words is "one trillion, twenty billion, two hundred twelve million, ten thousand, two hundred twenty-one".