2220021031 has 4 divisors (see below), whose sum is σ = 2250432352. Its totient is φ = 2189609712.

The previous prime is 2220021029. The next prime is 2220021059. The reversal of 2220021031 is 1301200222.

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 2220021031 - 2¹ = 2220021029 is a prime.

It is a super-2 number, since 2×2220021031² = 9856986756164605922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220021061) 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, 15205551 + ... + 15205696.

It is an arithmetic number, because the mean of its divisors is an integer number (562608088).

Almost surely, 2^2220021031 is an apocalyptic number.

2220021031 is a deficient number, since it is larger than the sum of its proper divisors (30411321).

2220021031 is an equidigital number, since it uses as much as digits as its factorization.

2220021031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30411320.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2220021031 is about 47117.0991360886. The cubic root of 2220021031 is about 1304.5248694333.

Adding to 2220021031 its reverse (1301200222), we get a palindrome (3521221253).

The spelling of 2220021031 in words is "two billion, two hundred twenty million, twenty-one thousand, thirty-one".