4021123031020 has 24 divisors (see below), whose sum is σ = 8445211660368. Its totient is φ = 1608286680000.

The previous prime is 4021123030973. The next prime is 4021123031087. The reversal of 4021123031020 is 201303211204.

It is a happy 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, 9955306 + ... + 10351345.

It is an arithmetic number, because the mean of its divisors is an integer number (351883819182).

Almost surely, 2^{4021123031020} is an apocalyptic number.

It is an amenable number.

4021123031020 is an abundant number, since it is smaller than the sum of its proper divisors (4424088629348).

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

4021123031020 is a wasteful number, since it uses less digits than its factorization.

4021123031020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20316561 (or 20316559 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 4021123031020 its reverse (201303211204), we get a palindrome (4222426242224).

The spelling of 4021123031020 in words is "four trillion, twenty-one billion, one hundred twenty-three million, thirty-one thousand, twenty".