1021210011100 has 36 divisors (see below), whose sum is σ = 2216132729608. Its totient is φ = 408464280000.

The previous prime is 1021210011089. The next prime is 1021210011121. The reversal of 1021210011100 is 11100121201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1930375 + ... + 2401825.

Almost surely, 2^{1021210011100} is an apocalyptic number.

1021210011100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021210011100 is an abundant number, since it is smaller than the sum of its proper divisors (1194922718508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021210011100 is a wasteful number, since it uses less digits than its factorization.

1021210011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493126 (or 493119 counting only the distinct ones).

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

Adding to 1021210011100 its reverse (11100121201), we get a palindrome (1032310132301).

The spelling of 1021210011100 in words is "one trillion, twenty-one billion, two hundred ten million, eleven thousand, one hundred".