20020220311 has 8 divisors (see below), whose sum is σ = 24640271264. Its totient is φ = 15840174240.

The previous prime is 20020220309. The next prime is 20020220351. The reversal of 20020220311 is 11302202002.

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

It is a cyclic number.

It is not a de Polignac number, because 20020220311 - 2¹ = 20020220309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 20020220291 and 20020220300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020220351) 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, 110001120 + ... + 110001301.

It is an arithmetic number, because the mean of its divisors is an integer number (3080033908).

Almost surely, 2^20020220311 is an apocalyptic number.

20020220311 is a deficient number, since it is larger than the sum of its proper divisors (4620050953).

20020220311 is a wasteful number, since it uses less digits than its factorization.

20020220311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220002441.

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

Adding to 20020220311 its reverse (11302202002), we get a palindrome (31322422313).

The spelling of 20020220311 in words is "twenty billion, twenty million, two hundred twenty thousand, three hundred eleven".