2021012020220 has 48 divisors (see below), whose sum is σ = 4363408334208. Its totient is φ = 785862423360.

The previous prime is 2021012020219. The next prime is 2021012020249. The reversal of 2021012020220 is 220202101202.

It is a junction number, because it is equal to n+sod(n) for n = 2021012020195 and 2021012020204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5387294 + ... + 5750213.

It is an arithmetic number, because the mean of its divisors is an integer number (90904340296).

Almost surely, 2^{2021012020220} is an apocalyptic number.

2021012020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021012020220 is an abundant number, since it is smaller than the sum of its proper divisors (2342396313988).

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

2021012020220 is a wasteful number, since it uses less digits than its factorization.

2021012020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11137770 (or 11137768 counting only the distinct ones).

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

Adding to 2021012020220 its reverse (220202101202), we get a palindrome (2241214121422).

The spelling of 2021012020220 in words is "two trillion, twenty-one billion, twelve million, twenty thousand, two hundred twenty".