1021211401004 has 12 divisors (see below), whose sum is σ = 1787129378328. Its totient is φ = 510603007200.

The previous prime is 1021211400997. The next prime is 1021211401037. The reversal of 1021211401004 is 4001041121201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353939 + ... + 1472309.

It is an arithmetic number, because the mean of its divisors is an integer number (148927448194).

Almost surely, 2^{1021211401004} is an apocalyptic number.

It is an amenable number.

1021211401004 is a deficient number, since it is larger than the sum of its proper divisors (765917977324).

1021211401004 is a wasteful number, since it uses less digits than its factorization.

1021211401004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346656 (or 1346654 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1021211401004 its reverse (4001041121201), we get a palindrome (5022252522205).

The spelling of 1021211401004 in words is "one trillion, twenty-one billion, two hundred eleven million, four hundred one thousand, four".