102021020212 has 12 divisors (see below), whose sum is σ = 184296036736. Its totient is φ = 49365009720.

The previous prime is 102021020209. The next prime is 102021020219. The reversal of 102021020212 is 212020120201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102021020192 and 102021020201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021020219) 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 in 3 ways as a sum of consecutive naturals, for example, 411374958 + ... + 411375205.

Almost surely, 2^102021020212 is an apocalyptic number.

It is an amenable number.

102021020212 is a deficient number, since it is larger than the sum of its proper divisors (82275016524).

102021020212 is a wasteful number, since it uses less digits than its factorization.

102021020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822750198 (or 822750196 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102021020212 its reverse (212020120201), we get a palindrome (314041140413).

The spelling of 102021020212 in words is "one hundred two billion, twenty-one million, twenty thousand, two hundred twelve".