1021010100121 has 12 divisors (see below), whose sum is σ = 1123179135232. Its totient is φ = 927436851000.

The previous prime is 1021010100079. The next prime is 1021010100161. The reversal of 1021010100121 is 1210010101201.

It is not a de Polignac number, because 1021010100121 - 2²⁵ = 1020976545689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021010100098 and 1021010100107.

It is not an unprimeable number, because it can be changed into a prime (1021010100161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3278385 + ... + 3576286.

Almost surely, 2^{1021010100121} is an apocalyptic number.

1021010100121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1021010100121 is a deficient number, since it is larger than the sum of its proper divisors (102169035111).

1021010100121 is a wasteful number, since it uses less digits than its factorization.

1021010100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6855924 (or 6855913 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1021010100121 its reverse (1210010101201), we get a palindrome (2231020201322).

The spelling of 1021010100121 in words is "one trillion, twenty-one billion, ten million, one hundred thousand, one hundred twenty-one".