1021111202001 has 32 divisors (see below), whose sum is σ = 1500216163200. Its totient is φ = 612622592000.

The previous prime is 1021111201993. The next prime is 1021111202021. The reversal of 1021111202001 is 1002021111201.

It is a cyclic number.

It is not a de Polignac number, because 1021111202001 - 2³ = 1021111201993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021111202021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22151425 + ... + 22197473.

It is an arithmetic number, because the mean of its divisors is an integer number (46881755100).

Almost surely, 2^{1021111202001} is an apocalyptic number.

1021111202001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1021111202001 is a deficient number, since it is larger than the sum of its proper divisors (479104961199).

1021111202001 is a wasteful number, since it uses less digits than its factorization.

1021111202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52817.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1021111202001 its reverse (1002021111201), we get a palindrome (2023132313202).

The spelling of 1021111202001 in words is "one trillion, twenty-one billion, one hundred eleven million, two hundred two thousand, one".