1021021100434 has 32 divisors (see below), whose sum is σ = 1626144024960. Its totient is φ = 479789029632.

The previous prime is 1021021100413. The next prime is 1021021100573. The reversal of 1021021100434 is 4340011201201.

It is a nialpdrome in base 16.

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, 773082 + ... + 1624714.

It is an arithmetic number, because the mean of its divisors is an integer number (50817000780).

Almost surely, 2^{1021021100434} is an apocalyptic number.

1021021100434 is a deficient number, since it is larger than the sum of its proper divisors (605122924526).

1021021100434 is a wasteful number, since it uses less digits than its factorization.

1021021100434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852114.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1021021100434 its reverse (4340011201201), we get a palindrome (5361032301635).

The spelling of 1021021100434 in words is "one trillion, twenty-one billion, twenty-one million, one hundred thousand, four hundred thirty-four".