20212021010 has 8 divisors (see below), whose sum is σ = 36381637836. Its totient is φ = 8084808400.

The previous prime is 20212021009. The next prime is 20212021079. The reversal of 20212021010 is 1012021202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20098449361 + 113571649 = 141769^2 + 10657^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20212020982 and 20212021000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010601041 + ... + 1010601060.

Almost surely, 2^20212021010 is an apocalyptic number.

20212021010 is a deficient number, since it is larger than the sum of its proper divisors (16169616826).

20212021010 is a wasteful number, since it uses less digits than its factorization.

20212021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021202108.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20212021010 its reverse (1012021202), we get a palindrome (21224042212).

The spelling of 20212021010 in words is "twenty billion, two hundred twelve million, twenty-one thousand, ten".