1020131220004 has 48 divisors (see below), whose sum is σ = 1963506847680. Its totient is φ = 460843194240.

The previous prime is 1020131219977. The next prime is 1020131220011. The reversal of 1020131220004 is 4000221310201.

It is a self number, because there is not a number n which added to its sum of digits gives 1020131220004.

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, 713059 + ... + 1596469.

It is an arithmetic number, because the mean of its divisors is an integer number (40906392660).

Almost surely, 2^{1020131220004} is an apocalyptic number.

It is an amenable number.

1020131220004 is a deficient number, since it is larger than the sum of its proper divisors (943375627676).

1020131220004 is a wasteful number, since it uses less digits than its factorization.

1020131220004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883900 (or 883898 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1020131220004 its reverse (4000221310201), we get a palindrome (5020352530205).

The spelling of 1020131220004 in words is "one trillion, twenty billion, one hundred thirty-one million, two hundred twenty thousand, four".