102020222121211 has 4 divisors (see below), whose sum is σ = 106455883952592. Its totient is φ = 97584560289832.

The previous prime is 102020222121203. The next prime is 102020222121227. The reversal of 102020222121211 is 112121222020201.

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

It is a cyclic number.

It is not a de Polignac number, because 102020222121211 - 2³ = 102020222121203 is a prime.

It is a super-2 number, since 2×102020222121211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102020222121271) 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, 2217830915656 + ... + 2217830915701.

It is an arithmetic number, because the mean of its divisors is an integer number (26613970988148).

Almost surely, 2^{102020222121211} is an apocalyptic number.

102020222121211 is a deficient number, since it is larger than the sum of its proper divisors (4435661831381).

102020222121211 is an equidigital number, since it uses as much as digits as its factorization.

102020222121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4435661831380.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102020222121211 its reverse (112121222020201), we get a palindrome (214141444141412).

The spelling of 102020222121211 in words is "one hundred two trillion, twenty billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred eleven".