20022021010 has 16 divisors (see below), whose sum is σ = 36049267800. Its totient is φ = 8006668416.

The previous prime is 20022020989. The next prime is 20022021017. The reversal of 20022021010 is 1012022002.

It can be written as a sum of positive squares in 4 ways, for example, as 18586141561 + 1435879449 = 136331^2 + 37893^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (20022021017) 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, 227925 + ... + 303304.

Almost surely, 2^20022021010 is an apocalyptic number.

20022021010 is a deficient number, since it is larger than the sum of its proper divisors (16027246790).

20022021010 is a wasteful number, since it uses less digits than its factorization.

20022021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535005.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20022021010 its reverse (1012022002), we get a palindrome (21034043012).

The spelling of 20022021010 in words is "twenty billion, twenty-two million, twenty-one thousand, ten".