2021210221124 has 24 divisors (see below), whose sum is σ = 3608542670040. Its totient is φ = 990247624704.

The previous prime is 2021210221091. The next prime is 2021210221159. The reversal of 2021210221124 is 4211220121202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1046610841600 + 974599379524 = 1023040^2 + 987218^2 .

It is a super-2 number, since 2×2021210221124² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021210221096 and 2021210221105.

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, 6035939 + ... + 6361994.

It is an arithmetic number, because the mean of its divisors is an integer number (150355944585).

Almost surely, 2^{2021210221124} is an apocalyptic number.

It is an amenable number.

2021210221124 is a deficient number, since it is larger than the sum of its proper divisors (1587332448916).

2021210221124 is a wasteful number, since it uses less digits than its factorization.

2021210221124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12398759 (or 12398757 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2021210221124 its reverse (4211220121202), we get a palindrome (6232430342326).

The spelling of 2021210221124 in words is "two trillion, twenty-one billion, two hundred ten million, two hundred twenty-one thousand, one hundred twenty-four".