102100121211010 has 32 divisors (see below), whose sum is σ = 198781425163440. Its totient is φ = 37533883984128.

The previous prime is 102100121211001. The next prime is 102100121211013. The reversal of 102100121211010 is 10112121001201.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 85639273714201 + 16460847496809 = 9254149^2 + 4057197^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (102100121211013) 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, 1714785837 + ... + 1714845376.

Almost surely, 2^{102100121211010} is an apocalyptic number.

102100121211010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102100121211010 is a deficient number, since it is larger than the sum of its proper divisors (96681303952430).

102100121211010 is a wasteful number, since it uses less digits than its factorization.

102100121211010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3429631462.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102100121211010 its reverse (10112121001201), we get a palindrome (112212242212211).

The spelling of 102100121211010 in words is "one hundred two trillion, one hundred billion, one hundred twenty-one million, two hundred eleven thousand, ten".