1021201102102 has 4 divisors (see below), whose sum is σ = 1531801653156. Its totient is φ = 510600551050.

The previous prime is 1021201102093. The next prime is 1021201102109. The reversal of 1021201102102 is 2012011021201.

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

It is a super-3 number, since 3×1021201102102³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021201102109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255300275524 + ... + 255300275527.

It is an arithmetic number, because the mean of its divisors is an integer number (382950413289).

Almost surely, 2^{1021201102102} is an apocalyptic number.

1021201102102 is a deficient number, since it is larger than the sum of its proper divisors (510600551054).

1021201102102 is an equidigital number, since it uses as much as digits as its factorization.

1021201102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510600551053.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1021201102102 its reverse (2012011021201), we get a palindrome (3033212123303).

The spelling of 1021201102102 in words is "one trillion, twenty-one billion, two hundred one million, one hundred two thousand, one hundred two".