102102021121011 has 16 divisors (see below), whose sum is σ = 136677880160928. Its totient is φ = 67797291564800.

The previous prime is 102102021120943. The next prime is 102102021121031. The reversal of 102102021121011 is 110121120201201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 102102021121011 - 2⁹ = 102102021120499 is a prime.

It is a super-2 number, since 2×102102021121011² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102102021121031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23426976 + ... + 27441341.

It is an arithmetic number, because the mean of its divisors is an integer number (8542367510058).

Almost surely, 2^{102102021121011} is an apocalyptic number.

102102021121011 is a deficient number, since it is larger than the sum of its proper divisors (34575859039917).

102102021121011 is a wasteful number, since it uses less digits than its factorization.

102102021121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50870982.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102102021121011 its reverse (110121120201201), we get a palindrome (212223141322212).

The spelling of 102102021121011 in words is "one hundred two trillion, one hundred two billion, twenty-one million, one hundred twenty-one thousand, eleven".