102121021032021 has 8 divisors (see below), whose sum is σ = 151290401528960. Its totient is φ = 68080680687996.

The previous prime is 102121021032011. The next prime is 102121021032053. The reversal of 102121021032021 is 120230120121201.

102121021032021 is a `hidden beast` number, since 1 + 0 + 212 + 102 + 10 + 320 + 21 = 666.

It is not a de Polignac number, because 102121021032021 - 2¹⁹ = 102121020507733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102121021031985 and 102121021032003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121021032001) 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, 1891130019085 + ... + 1891130019138.

It is an arithmetic number, because the mean of its divisors is an integer number (18911300191120).

Almost surely, 2^{102121021032021} is an apocalyptic number.

It is an amenable number.

102121021032021 is a deficient number, since it is larger than the sum of its proper divisors (49169380496939).

102121021032021 is an equidigital number, since it uses as much as digits as its factorization.

102121021032021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3782260038232 (or 3782260038226 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 102121021032021 its reverse (120230120121201), we get a palindrome (222351141153222).

The spelling of 102121021032021 in words is "one hundred two trillion, one hundred twenty-one billion, twenty-one million, thirty-two thousand, twenty-one".