1021111002101 has 8 divisors (see below), whose sum is σ = 1022749770240. Its totient is φ = 1019473440048.

The previous prime is 1021111002017. The next prime is 1021111002127. The reversal of 1021111002101 is 1012001111201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021111002101 - 2²⁶ = 1021043893237 is a prime.

It is a super-2 number, since 2×1021111002101² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021111002181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1400795 + ... + 2001111.

It is an arithmetic number, because the mean of its divisors is an integer number (127843721280).

Almost surely, 2^{1021111002101} is an apocalyptic number.

It is an amenable number.

1021111002101 is a deficient number, since it is larger than the sum of its proper divisors (1638768139).

1021111002101 is an equidigital number, since it uses as much as digits as its factorization.

1021111002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603043.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1021111002101 its reverse (1012001111201), we get a palindrome (2033112113302).

The spelling of 1021111002101 in words is "one trillion, twenty-one billion, one hundred eleven million, two thousand, one hundred one".