102021121211 has 8 divisors (see below), whose sum is σ = 103229041248. Its totient is φ = 100817080000.

The previous prime is 102021121171. The next prime is 102021121247. The reversal of 102021121211 is 112121120201.

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 102021121211 - 2¹⁸ = 102020859067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102021121291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916775 + ... + 1022016.

It is an arithmetic number, because the mean of its divisors is an integer number (12903630156).

Almost surely, 2^102021121211 is an apocalyptic number.

102021121211 is a deficient number, since it is larger than the sum of its proper divisors (1207920037).

102021121211 is a wasteful number, since it uses less digits than its factorization.

102021121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939413.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102021121211 its reverse (112121120201), we get a palindrome (214142241412).

The spelling of 102021121211 in words is "one hundred two billion, twenty-one million, one hundred twenty-one thousand, two hundred eleven".