1020212101191 has 8 divisors (see below), whose sum is σ = 1361964242160. Its totient is φ = 679300680512.

The previous prime is 1020212101189. The next prime is 1020212101201. The reversal of 1020212101191 is 1911012120201.

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 1020212101191 - 2¹ = 1020212101189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020212101121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210177240 + ... + 210182093.

It is an arithmetic number, because the mean of its divisors is an integer number (170245530270).

Almost surely, 2^{1020212101191} is an apocalyptic number.

1020212101191 is a deficient number, since it is larger than the sum of its proper divisors (341752140969).

1020212101191 is an equidigital number, since it uses as much as digits as its factorization.

1020212101191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420360145.

The product of its (nonzero) digits is 72, while the sum is 21.

Adding to 1020212101191 its reverse (1911012120201), we get a palindrome (2931224221392).

The spelling of 1020212101191 in words is "one trillion, twenty billion, two hundred twelve million, one hundred one thousand, one hundred ninety-one".