1020101121191 has 16 divisors (see below), whose sum is σ = 1049713227360. Its totient is φ = 990719262720.

The previous prime is 1020101121187. The next prime is 1020101121283. The reversal of 1020101121191 is 1911211010201.

It is a cyclic number.

It is not a de Polignac number, because 1020101121191 - 2² = 1020101121187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020101121121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17029505 + ... + 17089301.

It is an arithmetic number, because the mean of its divisors is an integer number (65607076710).

Almost surely, 2^{1020101121191} is an apocalyptic number.

1020101121191 is a deficient number, since it is larger than the sum of its proper divisors (29612106169).

1020101121191 is a wasteful number, since it uses less digits than its factorization.

1020101121191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61714.

The product of its (nonzero) digits is 36, while the sum is 20.

Adding to 1020101121191 its reverse (1911211010201), we get a palindrome (2931312131392).

The spelling of 1020101121191 in words is "one trillion, twenty billion, one hundred one million, one hundred twenty-one thousand, one hundred ninety-one".