102220212012021 has 32 divisors (see below), whose sum is σ = 153744783984000. Its totient is φ = 67111296384384.

The previous prime is 102220212011993. The next prime is 102220212012029. The reversal of 102220212012021 is 120210212022201.

It is a happy number.

It is not a de Polignac number, because 102220212012021 - 2⁵ = 102220212011989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102220212011985 and 102220212012003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220212012029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38050206 + ... + 40647983.

It is an arithmetic number, because the mean of its divisors is an integer number (4804524499500).

Almost surely, 2^{102220212012021} is an apocalyptic number.

It is an amenable number.

102220212012021 is a deficient number, since it is larger than the sum of its proper divisors (51524571971979).

102220212012021 is an equidigital number, since it uses as much as digits as its factorization.

102220212012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78698930 (or 78698924 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 102220212012021 its reverse (120210212022201), we get a palindrome (222430424034222).

The spelling of 102220212012021 in words is "one hundred two trillion, two hundred twenty billion, two hundred twelve million, twelve thousand, twenty-one".