1020021012211 has 4 divisors (see below), whose sum is σ = 1025719453800. Its totient is φ = 1014322570624.

The previous prime is 1020021012181. The next prime is 1020021012239. The reversal of 1020021012211 is 1122101200201.

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

It is a cyclic number.

It is not a de Polignac number, because 1020021012211 - 2⁷ = 1020021012083 is a prime.

It is a super-2 number, since 2×1020021012211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020021012191 and 1020021012200.

It is not an unprimeable number, because it can be changed into a prime (1020021012511) 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, 2849220526 + ... + 2849220883.

It is an arithmetic number, because the mean of its divisors is an integer number (256429863450).

Almost surely, 2^{1020021012211} is an apocalyptic number.

1020021012211 is a deficient number, since it is larger than the sum of its proper divisors (5698441589).

1020021012211 is an equidigital number, since it uses as much as digits as its factorization.

1020021012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5698441588.

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

Adding to 1020021012211 its reverse (1122101200201), we get a palindrome (2142122212412).

The spelling of 1020021012211 in words is "one trillion, twenty billion, twenty-one million, twelve thousand, two hundred eleven".