2021224700 has 36 divisors (see below), whose sum is σ = 4784792712. Its totient is φ = 734990400.

The previous prime is 2021224679. The next prime is 2021224703. The reversal of 2021224700 is 74221202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021224703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 917639 + ... + 919838.

Almost surely, 2^2021224700 is an apocalyptic number.

2021224700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021224700 is an abundant number, since it is smaller than the sum of its proper divisors (2763568012).

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

2021224700 is a wasteful number, since it uses less digits than its factorization.

2021224700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837502 (or 1837495 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 2021224700 is about 44958.0326526862. The cubic root of 2021224700 is about 1264.3622838250.

Adding to 2021224700 its reverse (74221202), we get a palindrome (2095445902).

The spelling of 2021224700 in words is "two billion, twenty-one million, two hundred twenty-four thousand, seven hundred".