1020211200101 has 4 divisors (see below), whose sum is σ = 1020477369132. Its totient is φ = 1019945031072.

The previous prime is 1020211200067. The next prime is 1020211200121. The reversal of 1020211200101 is 1010021120201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 701195215876 + 319015984225 = 837374^2 + 564815^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020211200101 - 2¹⁸ = 1020210937957 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 (1020211200121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133078766 + ... + 133086431.

It is an arithmetic number, because the mean of its divisors is an integer number (255119342283).

Almost surely, 2^{1020211200101} is an apocalyptic number.

It is an amenable number.

1020211200101 is a deficient number, since it is larger than the sum of its proper divisors (266169031).

1020211200101 is an equidigital number, since it uses as much as digits as its factorization.

1020211200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266169030.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1020211200101 its reverse (1010021120201), we get a palindrome (2030232320302).

The spelling of 1020211200101 in words is "one trillion, twenty billion, two hundred eleven million, two hundred thousand, one hundred one".