20022201021020 has 24 divisors (see below), whose sum is σ = 45869042339568. Its totient is φ = 7280800371200.

The previous prime is 20022201020981. The next prime is 20022201021061. The reversal of 20022201021020 is 2012010222002.

It is a super-2 number, since 2×20022201021020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20022201020986 and 20022201021004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45505002101 + ... + 45505002540.

It is an arithmetic number, because the mean of its divisors is an integer number (1911210097482).

Almost surely, 2^{20022201021020} is an apocalyptic number.

20022201021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022201021020 is an abundant number, since it is smaller than the sum of its proper divisors (25846841318548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20022201021020 is a wasteful number, since it uses less digits than its factorization.

20022201021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91010004661 (or 91010004659 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20022201021020 its reverse (2012010222002), we get a palindrome (22034211243022).

The spelling of 20022201021020 in words is "twenty trillion, twenty-two billion, two hundred one million, twenty-one thousand, twenty".