1021010100201 has 96 divisors (see below), whose sum is σ = 1945239528960. Its totient is φ = 501216325632.

The previous prime is 1021010100197. The next prime is 1021010100233. The reversal of 1021010100201 is 1020010101201.

It is a happy number.

It is not a de Polignac number, because 1021010100201 - 2² = 1021010100197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1021010100301) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 35496 + ... + 1429433.

It is an arithmetic number, because the mean of its divisors is an integer number (20262911760).

Almost surely, 2^{1021010100201} is an apocalyptic number.

It is an amenable number.

1021010100201 is a deficient number, since it is larger than the sum of its proper divisors (924229428759).

1021010100201 is a wasteful number, since it uses less digits than its factorization.

1021010100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465015 (or 1465012 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1021010100201 its reverse (1020010101201), we get a palindrome (2041020201402).

It can be divided in two parts, 1021010 and 100201, that added together give a palindrome (1121211).

The spelling of 1021010100201 in words is "one trillion, twenty-one billion, ten million, one hundred thousand, two hundred one".